BTW.....
If any of you ever have a problem with seams splitting when the tube bends, you have a problem with your vendor moreso than the tube....
rule of thumb while bending tube, is to keep the weld seam in the neutral plane....this is for bending CONSISTANCY.....moreso than it is for tubing failure
on a straight tube that you expect to get bent a certain way, same holds true, so in the case of a tube-door, it would be best to keep the seam either pointed up or down, not inside........it shouldn't matter though, one should be able to bend a tube without seam splits.
if it does, your tubing mill sucks.