I gotchya covered, it took a tap here a pull there and a couple ratchet straps. its within a 1/16 of a inch, should work for a dirt runner. if it was running on a track i'd probably pull a little more. I think it'll hold. oh yeah that stash of 1 1/2" tubing I had was 1/4" wall, I found this piece on the bottom of the wife's yard hammock. shh don't tell her!
