What the heck is going on here?!

ok guys so I went ahead and cut that piece out (see picture below). I installed and removed a number of times to get it just right so that I could move the control arm up and down full range of motion with no contact. sounds good right? So I put it all back together and when I started moving the adjusting cams to set the camber caster IT STILL MAKES CONTACT! on the inner wall of the forward arm where I just cut metal out of. Im pissed off and ready to drive to PST and throw them through their front door! Has anybody had any similar issues with these? my car is 1975 Dart sport.

View attachment 247972

you need to trim the "L" all the way to the frame rail...