I'm following the http://www.bus.ucf.edu/cwhite/theater/DIYCable.htm recipe for buidling cables. I've purchased the exact tools listed on the site including the Canare die and Parts Express crimp frame # 360-680 . I followed the suggestion at the bottom of the DIY page to "tighten up" the crimp frame. My problem is using the LV-77S cable and RCAP-C77 ends. The pin is not crimping on to the cable...it pulls right off. Everything else is going well. Any suggestions what I might be doing wrong?