Zrated1, I use the TD8 and trigger with a HartDynamics TE3 Gigapro kit with ECymbalsII. I am using a pretty much stock sound with a few minor trigger tweaks, but at first I thought they sounded a bit thin as well. Until I recorded them and played back in a diffrent set of headphones, then monitors and then the car.
It turns out, when I changed monitors/envronments the cymbals sounded fine in the mix. So I changed the headphones I monitored with ( actually I upgraded to a better pair

) and it sounded much better.
I did have to tweak the triggers forever to get the right "feel" of hitting a cymbal, and the HD ecymbalsII series has a metal ride and hats which also helped to make the whole e-kit thing more like acoustics for me. but I digress.....

I can send you my settings, but I think you should record them ( if possible) and make sure it's not just your monitoring system making them sound "tinny". Also as Winger pointed out...try a couple of the other cymbal settings and record them.
I will find my settings and send them, but I think you might be able to switch monitoring and get the sounds you want.
-RHS
