Anybody have a source of a good left handed flint lock?  I've shot a lot of percussion, but never flint.  I'm interested in something like the Kentucky or blue ridge, preferably 50 cal to 58 round ball, and good quality.  I wouldn't mind putting together a kit, I've got the wood and metal working skills but don't know where to start.  Also I cast my own, so ball availibility is not an issue as long as I can get a mould for it.
 
I have heard that you can take a right handed flint lock and convert it to left handed without too much trouble.  Doesn't sound rite to me, but as I said I'm a newbie with flints.
Thanks