First of all, he sid he is New to this. Forming & fitting a Chambers lock is not even a option.
2nd, He needs to stick with the basics & Learn first, not modify the cock. (IMHO)
Cost $9.45 to send the lock to Brad. Prob won't cost much to adjust it. $9.45 back.
I'd have it in the mail tomorrow, AFTER you tried all the flint suggestions I mentioned in the above post.
You need bout a dozen flints anyway, before ya even get going good with a flintlock. Flints & all the other
misc & some time at the range.
I have shot 2F in a pan Thousands of times with no issues. Heck when I hunt in the rain, I use 2F or 3F.
4F in the rain in AL will turn to wet mush.
The Flint makes a big dif too, Every angle of it. NONE of them are the same, all will differ slightly. I usually buy 100 at a time as get them allot cheaper in bulk. Soon as I get them I grind the hump off top of all of them & make it a flat top. Saves allot of aggravation at the range. Flint sits well & doesn't slip or tip, etc.
Main thing is Get PAST this lil issue & get some time in at the range & Learn the rifle. Time & shooting
will teach you what TO DO & what Not To Do.
Also, if you can, shoot with someone that really Knows flintlocks. He/she can teach you more in a day
than you will remember. And it is time well spent.