915 Gurus, Dog gear backcut

[aus911]

Hi all,

I am researching a 915 rebuild and am curious

1. how many use the 9deg backcut dog gear teeth.
2. how many use standard dog gear teeth and cut/have them cut to 9 deg
3. how many use std dog gear teeth.

Of those who used std dog gear teeth did you experience any problems?

Cheers
Ray