I took the pedals out and put a small burr into the Dremel. I cut some shallow grooves out from the hole for the fitting, put a fresh tube of grease with Moly in the gun and it went in very nicely. Thanks guys!
As an aside, the grease that was in the gun had been leaking oil out for sometime and it was around freezing this morning when I started. It was hard as could be. Should I start with a fresh tube if the grease has been sitting for a long time and has left a puddle?