HuH? Hole not in the right place to use tubes. Haven't seen a hole in a rim that I couldn't put a tube into. Please clarify Rayjay.
The only one rim that had me baffled was on a Troy Bilt Econo-Horse rototiller. The only tube available was one with a right angle stem. The parts guy said to take it home and see if it would work. It didn't, so we retuirned it and bought a smaller tube that worked perfectly. Only putting 5 - 8 pouds of air into it.
Most tube stems are offset, not centered. Install the tube with little or no air in it, re-install the tire and pump up the tube. The tube will form itself to the rim and tire.
Just got in a bunch of wheel barrows, all junked because the tires were flat. Bought all the 8" tubes the auto parts store had, $7 each. Wheelbarrows are going for over $50, each. I tube everything, except the solid 'no-flat' tires!