take a mallet and know the crank forward check the gap between the crank and the the thrust should be .006 - .008 then knock it back and check the other side should be the same .
Wow, good advice! I checked the clearance and it was .003 !!! After about 7 times of installing & removing them I finally got it. I was using a plate of glass & some fine sandpaper and I carefully knocked it down square.