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Reply to "4 speed Shifter"

Yes @DannyP the shift rails, not the sliders.

We've had a few, probably more recently than our conversation, that the hockey stick had just enough room to slip out of the reverse rail whilst reverse was still engaged and trying to stop the rail short, closing that gap,  didn't allow for full engagement of reverse so it would want to pop out of gear.  We had to add a small bead to the bottom of the 1-2 rail which closed the gap slightly and prevented this from happening, while allow for full engagement of reverse.

I am not as internally familiar with the T1 trans (never rebuilt one in house), as I am with the Porsche 901 and 915, so I don't know if the shift forks can be moved on the sliders  fore and aft before locking them down, but in a 901/915 you have a little bit of wiggle room and rotation that can change the amount of throw and rotation on the lever.  If the T1 is the same I can see that having a small effect on how far the rail stuck out when the gear was fully engaged.  If R rail was set at it longest and 1-2 rail was set at its shortest, you have the largest gap possible.  Again, I am only assuming that the slider/dogteeth/synchros/forks in a T1 are similar to the early 911/914 stuff, so my "theory" on that may be way off if they are vastly different.

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