anyone had problems with the orings. The really thin ones that sit in a groove in the top cap and around the base just below the chimney. Mine just get pushed down into the base or up into
the top cap when reassembling, even when a lot of juice around to lubricate...
if you have old kanger heads ( protank, aerotannk) they have and white o-ring at 510 thread base, you can use those to replace very thin stock o-rings, fit really nice