TF3 shift kit governor issue

I have instructions at home so I can look on Monday night. I don’t think u need to modify it as when u drill the bottom half of the vb for the plate u r there for creating the manual shift then. Grinding the valve on the TGB-2 kit is so u can shift to low at any speed u want. Even at 100 mph. Just realize that ur low gear is 2.5 times that of high gear so what ever rpm the motor is at in high gear when u shift to low rpm will be multiplied 2.5 times. Ex 3000 rpm times 2.5 is 7500rpm. Your TGB-3 will go to low at any speed as well. Kim