SeattleSteve
Experience teaches us many things. I found that I had many flash-in-the-pans with my Traditions flintlocks, until I started using 3F powder, flows in to the Traditions patent breech more easily (if there is no powder near the inside of the touch hole, no bang!)
You will notice while shooting that many folks routinely shake their gun before shooting to move the powder away from the touchhole so that it does not cover it. It helps to keep the touch hole clear so flame goes right to the main powder charge (no fuse effect). Your vent might be a little low, but is workable. grinding out a lower spot on the pan might help but try the above first, use as little prime as you can. It is amazing how little you will need.
You could also drill out the vent liner a tad to improve ignition. The maximum diameter should be no more than 5/32 (I believe! Several references to this on other threads in this area).
Bottom line is that experience will increase the number of successful shots you have with this gun. Make small changes, a few at a time. This gun is and will be a good shooter!
Jester :relax: