I'm not real impressed with the T/C rifles in flintlock, unless the lock was upgraded to an aftermarket "drop-in" brand.
TC has upgraded their rocklocks and they have changed the geometry of the cock. They also have the best customer service have ever seen. Few years back I picked up a used old style TC Hawken, only because it had a custom 32" Orion barrel. The original lock was a real flint eater, I sent the lock in to TC for repair, week later I got a new lock back at no charge. The new TC lock sparks as well as any I have seen and flint life is great.
When Green Mountain had their $100.00 sale on .54 smoothbore flinter barrels for the TC Hawken, I got one. Was a no pain drop in and has been fun to play with, little heavy up front, but still a useful practical conversion.