Lengthening my axles was another fun task but required to eliminate those wheel adapters. I cut the axles fish mouthed some tubing to get some more strength from my welds, placed the sleeve over the axle with a spacer to keep them spaced properly. I then tacked it all together while cutting 2 keyway on opposite sides of the shaft at least a quarter inch into the shaft. I then welded both ends and keyways to create a strong axle.