[Travis Covington]

Are any of you limiting the piston stroke to ensure that the piston isn't shoving the dog into either dogged gear?

I have never worked closely with the AM trannys but on our own gearboxes we pay very close attention to the side load that the dog puts on the gear, making sure there is a gap of some sort so that the dog doesnt physically push on the dogged gears when the dog teeth are engaged. We use 1/4" ID nylon spacers to limit the pistons stroke to just under the distance required to move from being fully engaged in one gear to being fully engaged in the other.

I should note, we run at a full 60 psi and use a #3-48 stainless SHCS instead (which is MUCH weaker than the included roll pin) We have yet to break a screw under normal conditions. A few times we failed to tighten the jam nut on the piston rod which allowed the dog to push on the dogged gear, and only during those few times did we have any problems.

Couldn't hurt to throw it out there...

Edit: Oops... I didn't even see Tyler's post. This just reaffirms what he said though!