I installed a Pamco and new advance that i just bought from Mikes XS and had a couple issues. I thought i would ask this group before i call mikes and complain. First issue was the threads in the advance retaining nut (# 1 in the photo) as they didn't appear to be cut deep enough. It turned onto the cam very hard and wasn't able to get all the way bottomed out. I used my old one and worked fine. Second issue, when i tightened down the nut on the advance rod collar(#2 in the photo), the collar bottomed out on the camshaft instead of the advance rod and locked up the advance. i compared to the old rod and found it to be too short between the machined areas that ride on the cam bushings. I installed the old rod and it works fine. Do you think i got faulty parts? or are there differences in years and maybe i ordered the wrong thing? I thought the only difference with the advance is the bushings in the cam after 1980.. IDK any ideas??