Re: Newb here in ATX
Aluminum threads - could be tight or beat up, or thinkmaybe you crossthreaded it?
If you can bring it to Cedar Park I'll help you out. We can measure the thread pitches in the frame and the petcock; if they match we can chase them out. If not, at least you'll know what they are.
It would help me too, as I'm curious about that frame.