What I “learned” in my TA days was that if you launched and went to make the 1-2 by “pulling” the lever.... you could drag it past the detent and end up in 3rd.... pretty common actually. I found it best to “slap” on the 1-2 as the lever would move over to the right in prep for the 2-3. I had both gates for my shifter as I used it with my clean N t-brake briefly. The deal breaker was after we put the W8 in and on the test passes it would go 1-2 on the hit.... now when your shaking down a new combo your mind is in a million different directions I didn’t figure out what the H was going on until the 3rd pass when I watched the dang thing go 1-2 when I let go of the t-brake .

I actually took my valve body out and shimmed the ball and filed on the rooster comb to make it harder to move between the detents..... but the PPP fell into my lap so we ran with it.