I'm sure that this poor SOB is either dead of an anxiety attack, or been sucked into a turbo prop by now (it's been a few years). If he'd ONLY called Tower (GMS) for some tech support, instead of wasting so much tim e asking "anybody" here online, shame. My GMS .47 motor is absolutely unbelievable. It'll pull a relatively heavy Kaos .40 vertical until I can't see it very well anymore. I've NEVER had a deadstick with this motor. It actually started the first time I hit it with my Sullivan starter, because If followed the simple directions, most likely. I would almost guarantee that the problem came from the low speed needle NOT being in the correct position at the start of all this goofiness. I have personally seen that phenomenon baffle and confuse even the wisest old timer (who assumes that the guy who brought the thing to the field never screwed with it back on the bench at home, a distinct possibility).
Face reality, these things are all made the same on CNC equipment. Assuming that all your fuel plumbing is done correctly, your plug is good, and your fuel is good, If one GMS .47 runs well (they do), yours can too, unless it has been damaged, or improperly adjusted. This reminds me of when I was a little kid, and my old man couldn't get my .049 to run. It sat on a shelf for 5 years, until my buddies Dad overheard my pal & I discussing the Cox Stuka on my shelf. His Dad said go get it! Within 10 minutes it was running like a ....turbo prop.