I have a 49mm t-body a swap when I suspect the 55mm one to be a problem. I notice alot of a difference up top. The t-body can limit the amount of power you make... you can only get so much threw a hole. True, you do want velocity, but by slowing the air back down, you also help create a situation that provokes more even cyliner distribution.

You ever out at any of the meets, I wouldn't mide shooting the shit for a while. I sounds like you atually know a thing or two...unlike most of the dueches I see.