Who does alignment on travel trailers?

I recently replaced one of the axles on my toy hauler DIY due to a compromised spindle (previous bearing failure). New axle came with leaf springs and brake assemblies installed. I had excessive wear on the outer edge of one tire with the old axle even before the bearing failure. Carefully measured the various distances where the leaf springs bolt to the frame in relation to the axle itself on both the old and new axles. The old axle was positioned approx. 3/4" "off center". Made the same measurements on the new axle. They were way off. Impossible to bolt to the frame. Loosened up the u-bolts and made sure everything was square. Just finished a 5000 mile trip with the new axle with no uneven tire wear.