Been thinking about this...I was camped there a couple years ago at virtually the same altitude and I didn't have any problems. Makes me wonder now if perhaps a spider didn't spin a web in the tube leading to the jet....or something like that. Gonna go see and will report back.
The location of our camp was essentially at junction of Taylor River Road and Rocky Brook Road. A couple years ago, we were on east side of RBR...this time a little further west and just slightly higher. I'd be surprised if the difference was even 50'. If it was the jet's size, it wouldn't have worked right previously.
My generator worked great...but the prevailing winds kept blowing the exhaust back onto the trailer and my CO detector kept going off. First time it did that was after I'd tried to go to sleep on 1st night there. It was one thing after another cuz microwave wouldn't work either....a wire got vibrated loose on the drive in. I was going a bit nuts!