slight update:

Ever since I got the coach I have felt it was under-powered. I know the general consensus is that this beast has plenty of power, so I was always wondering if I was just different than the rest of the crowd, or if my coach wasn't performing the way it should.

Today i was just browsing the photo site and stumbled across a post by Emory Stora about the fishing weight modification to the throttle cable.
Hmmm.
So I took a look and i had a ton of slack! tried the fishing weight, but decided I wanted something a little more permanent so i just bent the throttle arm until I could get WOT from the accelerator.

totally different animal. The way it was, I estimate I was getting about 1/2 throttle before the pedal hit the floor. Adjusted and now I can see what you guys are going on about! It feels like it has plenty of power (it's obviously still a 12000 lb monster and slow as molasses, but it feels POWERFUL and slow now, as opposed to dangerously slow and anemic.

I'm a happy guy at the moment.
Huge thanks to Emory for posting that up so I could stumble upon it.