10" x 1.75" drum help

FYI-

If you're running 10x1.75" drums on your LBP axles, you would still need new LBP axles to upgrade to 10x2.5" LBP drums.

The offset that is built into the axle for the 10x1.75" drums is different than the offset used for 10x2.5" drums. Funny enough, the 10x1.75" SBP drums have a unique offset, so if you have axles to run those brakes you can't run anything else without an axle change. The 10x2.5" LBP drums use the same offset as 11x2.5" drums, 11x2" drums, and even 11x3" drums. All of those brake set ups can use the exact same axle as long as you have the right backing plates for the drums you're using.

So, if you drill a set of SBP axles to LBP, you're still stuck using SBP drums and you have to drill them to LBP as well. You can also buy new axles that have the SBP offset but a have the 5x4.5" LBP, but again, you're stuck re-drilling SBP drums to LBP.

Seems like you probably have your issue solved, but I just wanted to clarify this point.