SMR shift kit guys, Did you drill out the plate holes exactly like the instuctions? The 2 big 3/16 holes for 2-3 shift... I am wondering if that makes it shift TOO hard. How does it work with your cummins truck? Im thinking of going a little smaller 2 holes for that 2-3 shift.

Also I have a extra valve in my kit that is not even mentioned in the instructions. Looks like a switch valve. Anyone know why that extra valve is in the kit?

Rick