I really messed up this time! I have a pinky sized hole in my lower case right next to the front sproket.... any ideas to fix??? Some miracle goop?

do you have the piece? is the hole near the seam in the case? you can most kinds of 2 part expoxy like PC7 or splash zone

Get it CLEAN, CLEAN & CLEANER. Build it up with JB weld PLan on redoing it every 6 months