What am I doing wrong? I need to install some helicoils in my TF727 tailshaft housing. This is where the D-300 mounts. The holes I need to fix are the bottom two where the tranny mount goes. I have drilled out the original threads using the bit from the Helicoil kit, I can't get the Tap from the same kit to start threading into the Aluminum. The tap starts to load up with aluminum, and then it won't cut. I have tried running the tap by hand, and also in my drill. Cutting fluid is Liquid Wrench. Please give me some tips....