I'm not sure how the Mounted condition is supposed to work with various special rules related to Pinning. The following quotes are all taken from either the Ash Wastes Rulebook or the Book of the Outlands.
If my Mounted fighter with Nerves of Steel is hit by a shooting attack, what happens?
NoS1. Cool check, if passed nothing happens (proceed to Initiative check if Cool check failed).
NoS2. Initiative check, if failed Knocked Down, then Cool check to avoid being Pinned.
NoS3. He's not getting Pinned because he's hit by a ranged attack (he's getting pinned because he's Knocked Down), so the skill doesn't help.
If my Mounted fighter with Spring Up starts their activation Pinned, what happens?
SU1. Initiative check, if passed Stand Up for free.
SU2. Initiative check, if passed make a second Initiative check in order to take the Stand Up action for free.
If my Mounted fighter is hit by a ranged weapon with the Seismic Trait, what happens?
S1. Initiative check, if passed they're not Knocked Down but are still Pinned.
S2. Automatically Knocked Down and Pinned.
Maybe the answers are obvious, but with there being so many contradictions in the rules I'm no longer sure of anything, so I'd appreciate a second opinion.
HIT FIGHTERS BECOME PINNED
The vast majority of fighters, when they find themselves under enemy fire, will duck for cover and attempt to keep their head down. To represent this, when a Standing and Active fighter is hit by a ranged attack, they re automatically placed Prone and Pinned. Players should note that a Standing and Engaged fighter cannot become Prone and Pinned.
"I Get Knocked Down...": A Mounted fighter does not automatically become Pinned when hit by a ranged attack. Instead, they immediately make an Initiative check (applying a -1 modifier if they were hit by a weapon with either the Blast (X) or Knockback traits). If this check is failed, they are Knocked Down
When a Mounted fighter is Knocked Down, they immediately suffer an automatic hit. The Strength, AP and Damage of this hit is determined by how far the fighter moved during their last activation, rounded up to the nearest inch:
Distance Moved Strength AP Damage 0"-5" 3 - 1 6"-9" 5 -1 1 10"+ 7 -2 2
Once a Mounted fighter has been Knocked Down, they become Prone and Pinned. However, they must pass an Initiative check before they can successfully perform the Stand Up (Basic) action. If this check is passed, the fighter may stand up as normal and immediately becomes Standing and Active once more. If this check is failed, the action is wasted and they remain Prone and Pinned.
4. NERVES OF STEEL
When the fighter is hit by a ranged attack, make a Cool check for them. If it is passed, they may choose not to be Pinned.
5. SPRING UP
If this fighter is Pinned when they are activated, make an Initiative check for them. If the check is passed, the fighter may make a Stand Up (Basic) action for free. If the check is failed, the fighter may still stand up, but it costs one action as usual.
SEISMIC
If a fighter hit by a weapon with this Trait is Standing and Active, they will always become Prone and Pinned - even if they have an ability that would normally allow them to avoid being Pinned by ranged attacks. If a vehicle is hit by a weapon with this Trait, after the attack has been fully resolved the vehicle must make a Loss of Control test.
In addition, if the wound roll for a Seismic weapon is a natural 6, no save roll can be made against that attack.
If my Mounted fighter with Nerves of Steel is hit by a shooting attack, what happens?
NoS1. Cool check, if passed nothing happens (proceed to Initiative check if Cool check failed).
NoS2. Initiative check, if failed Knocked Down, then Cool check to avoid being Pinned.
NoS3. He's not getting Pinned because he's hit by a ranged attack (he's getting pinned because he's Knocked Down), so the skill doesn't help.
If my Mounted fighter with Spring Up starts their activation Pinned, what happens?
SU1. Initiative check, if passed Stand Up for free.
SU2. Initiative check, if passed make a second Initiative check in order to take the Stand Up action for free.
If my Mounted fighter is hit by a ranged weapon with the Seismic Trait, what happens?
S1. Initiative check, if passed they're not Knocked Down but are still Pinned.
S2. Automatically Knocked Down and Pinned.
Maybe the answers are obvious, but with there being so many contradictions in the rules I'm no longer sure of anything, so I'd appreciate a second opinion.