Here are a couple of places that I've used on western Washington:
Smileys trailers in Mt Vernon -I had them replace the axle
on my utility trailer.
West craft in Lacey - They did extensive repairs to our Casita
after a tree crunched it. As a follow up, they replaced the axle
as it had bent from the weight
of the tree. They do a lot of work on the big RVs, trucks, etc but still did a fine job for us.