upper control arm rubbing against cpp drop spindles

[mlevario99]

Hi, I installed the disc set up from an 81 chevy truck. I bought the 2" drop spindles from CPP. I was installing them this morning when I notice that the front lip of the upper arm is rubbing against the spindle, do I need to grind part of the upper arm for it to move freely, or are the upper ball joints installed incorrectly and they need to go under the control arm. Thanks for your help.