Anyone here play a JCM 2000 TSL?

I have a few amps, one of them is a JCM 2000 TSL which I have had now for about 2 years. The clean channel on this amp is great. I have a few amps noted for their clean sounds and this amp more than holds its own.

....but I never really got on with the crunch or lead channels. My lack of appreciation for these crunch and clean channels has morphed into a real hatred for the awful tinny, buzzy, thin awfulness of these channels. I have recently come to the conclusion that this amp is simply not for me. The amp is in good shape and has been serviced recently. I went into my local music store to play a 2000 they had in stock (to make sure its not unique) to mine and they had the same thin, brittle, drive channels. 

I live in a place where I can really crank my amps and, contrary to my expectation, the more I crank this amp the more the drive channels seem thin and weak. Loud enough to explode a cow but never powerful sounding. I have an 18 watt Dr. Z that puts this thing to shame for bark and guts.

That said some people seem to love them, and I'm certainly willing to try. Any one have any magic EQ settings, voodoo, or other tecniques for getting the most out of this amp?

I'm not a metal guy, but would certainly keep this amp if I could squeeze a JCM 800 type sound out of it (zz top, AC/DC, judas priest). I'm not 100% sure that this amp contains those sounds.

I would love to be proved wrong by anyone who knows better. I'm afraid this amp may be a dog.