I found this thread here:
http://www.rcuniverse.com/forum/rc-t...r-install.html
With a translation.
It looks like to find the location of the main axle hole, after you grind away the original plastic mounting boss you position the main axle of the Henntec unit over the original hole location, and then rotate the swing arm to the 11 o'clock position. The hole from the
swing arm thus becomes the drill point for the main Henntec axle unit.
Is this right?
Steve