What should be the allowance for press fitting?

[ukazak]

Thanks, Dave,

Bummer! I dont have reamer of that size... and cant find my 3.9

but, how about taping with M4, than locktite and press. I cannot put too much of presure on the shaft, afraid of bending.

I'll take the advice, good idea to practice with scrap first.

cheers,
unal