A few thoughts:
- Try insertion after warming up and relaxing your penis with a hot shower or by soaking; also, try a little lube or oil.
- Try insertion going in the opposite direction;
- Carefully & slowly guide a 10ga taper into and through your appy fistula, closely followed by your 10ga bb, with no space in between. You can buy a taper from the store here.
Best of luck and don't force anything!
"Very little of what we say is important, but if not careful, much of what we say can be harmful."