Bumpy,
You’ve been given loads of good advice here and it looks like you’re shooting well with your new flinter.
You have asked a few questions that I’d like to give my .02 on. Most of the time in warmer weather I shoot spit lubed patches and cut them off at the muzzle. To start with I will tear or cut my patch material in ribbons about 1.25” wide. I’ll tie that ribbon on my horn or pouch strap at the top of my shoulder. Your short starter should have 2 lengths of rods on it, one about .25” and one about 5”. To load that rifle, put the end of the patch ribbon in your mouth then measure and pour the powder. Set the wet patch across the muzzle, set the ball on it then push it down with the short side of your starter. Cut the patch off across the muzzle and push the ball and patch down with the long side of the starter then ram it home on the powder. A firm push to the bottom is enough, don’t pound on it unless it stops short of the powder. When you’ve settled on a load, mark that rod so you’ll be pushing it to the right depth consistently. The advantage to spit lube is it is always handy, doesn’t get your hands dirty, helps keep down fouling and has proven very accurate. I’ve used this method for target shooting, plinking and competition for more than 50 years. I’ve tried lots of other things over the years but this always works, especially when you’re loading from the pouch. All that needs to be in your pouch is flints, tools, cleaning stuff and round balls. Hunting is a different story. You need a lube that won’t dry out like Crisco or similar shortening.
I melt it then soak the patch material and let it solidify. Load the patch and ball in a loading block just like the muzzle of your your rifle. Once you fix the sights, spend time practicing with both lube styles to be sure both will group to your satisfaction. No one has said anything about cleaning while shooting or shooting in cold weather.
In a match I want to run a slightly wet patch and two dry patches after each 5 shots or so.The gun will get hard to load after a few shots so stop and clean one shot before problems start. When it’s cold, winter formula windshield washer fluid is your friend. You might try shooting and cleaning with it. Always keep the pan, frizzen and flint clean and pick the touchhole frequently. Part of your pan erosion is caused by that touchhole with a screwdriver slot in it. I know cause I did it too. If you can get it out I would replace it with one that is filed flat with the barrel. It’s coned on the inside, has a flat face and won’t burn out the pan. It’s inexpensive and it works!
Good luck and keep shooting!