ok i thought of this and wondering if it would work. I have the 78 -79 style hp 44 with the 1/4 wall tubes. My idea was instead of trying to burn out or drill out the plug welds and trying to press out the tube wouldnt be easier to buy a lenght of three inch dom with 1/2 wall and turn down the end to press that into the existing tube. It would still go into the housing and then plug weld again and butt weld the tubes together where they meet.AM I missing something or could this work.