Lower priced Power lok, sure grip units on Ebay.

mopowers said
Give it a shot and tell us what you think! I wouldn't want to be the guinea pig, that's for sure. Setting up a ring and pinion is a job I only like to do once.

That gap between the cross shafts and ramps doesn't seem right. I read 0.010" somewhere max, this is over 0.030" easily and crooked.