Uniball Upper Control Arm mounting issues

I'm kind of typing this after spending a good 5 hours trying to make this work so I'm going to make it quick because it's pretty late. If anyone has installed total chaos or camburg UCA's on the their 1st gen or if you know otherwise help would be appreciated. The problem is the part below the uniball which mounts through the A arm will not sit flush with the A arm. It's ever so slightly off, maybe 1/16th of an inch. All the torque from the top bolt that runs through the uniball (and believe me I torqued the hell out of it) won't get it to sit flush and I obviously don't want to strip the thread. Tomorrow morning I plan on taking the A arm off and just getting solid even hits on the part with a sledgehammer so it's flush. So if anyone has any better suggestions before I get the A arm off I would appreciate feedback. Thanks!

 

@Timmah!
https://www.youtube.com/watch?v=yXjioXyZa_M