Mauser,
I don't know how close you are to State College, but there is a company called RMC Sports in a town called Mingoville, which is between State College and Lamar. RMC has a store at their plant. They sell T/C and Lyman among others, plus all of the accessories that they manufacture.

I talked to Mr. Rightnauer, the owner, on my last trip through and he told me that they always stock Lyman frizzens which have been altered to fit T/C's.

Of course, I learned this long after I had altered and installed my own. I recommend a Dremel tool with a flat wheel. Lyman frizzens are very hard, and you only have to remove a few thousandths from each side. The job takes about five minutes. Just be sure to cut the ends square so that, when you insert the frizzen screw and flip the frizzen back and forth, it does not bind on the sides.