kinda curious if you ever got this resolved and if the "standard" brand switch worked. i'm having the same problem with my challenger with the passon 5 speed. i might call brewers because i think i read somewhere that they have a switch that addresses this problem.
From time to time, we have needed to machine the shoulder back on the switch to allow it to screw in deeper. Obviously this is for the A833/A230....assume it would be the same for the trans you mentioned. I would check the switch with a meter to see if that is the case before modifying anything.
