momo shift knob
#2
The shifter stick is 16 mm and the inside of the Momo **** is around 14 mm. You can either make the stick smaller on a bench grinder or do what I did and open up the inside of the **** with an air grinder and a cutting bit.
#5
I had an undersized **** (no sexual connotation). I got a drill bit slightly smaller than the opening on the ****, and I wrapped that bit in a piece of extremely rough sandpaper by taping it onto the bit. Then, I used the drill and bored the **** out. The aluminum kept coming out as dust, and I went to trial fit the **** several times until I got it to barely sit over the shifter threads. Then, I threaded the **** down onto the shifter. The shifter actualy tapped its own threads into the ****. I'd do it again before I bought an adapter.