I find 1/16 prone to misfires, I like 5/64 or 3/32
A cavet is that TC used a patent breach and I have heard, not known for myself, that these can have fouling issues
I fully agree with tenngun.
I, too, like a 5/64 or 3/32 touch hole. Also, I have never had a gun with a "patent breech", but I have often heard that people have problems with them. Nor, have I ever had a gun with a vent liner. I agree with Ravenshear that a vent liner was originally a repair for a vent that has so burnt out and enlarged that it needs replacement, which is what a vent liner does.
In our modern times with muzzleloading being recreation or a hobby, wiping between each shot is perfectly okay. However, back in the times when a muzzleloader was the only kind of firearm available, it would be unlikely that people wiped between each shot, especially not military personnel during a battle.
The touch hole should be in the middle of a straight line across the top of the pan. Not down nearer the bottom of the pan. Very little priming powder is needed. Do not fill the pan with priming. Just a bit in the end of the pan away from the touch hole seems to work best, in most cases. You can prime with 4F or you can simply prime with whatever powder you use as your main charge, be it 2F or 3F. Personally, both my load and my prime are the same 3F, and I prime directly from my powder horn, thereby eliminating the need to carry a priming device. But, to each their own on that score.
A vent pick is a handy item. I don't pick between every shot, but I do use it often enough to make sure of a clear passage from the priming to the main charge.
I make my vent picks very easily. A simple paper clip with one end straightened out works just fine for a vent pick. I have also made them by putting a thin nail in the end of a 1/4 or 3/16 dowel, or even just a piece of a stick, cutting off the nail head and filing it to make a slight, dull point. Instead of patches, I keep a vent pick in the patchbox on my rifle.
Good luck in getting your problem solved.