Don, I suggest you send it to a shop that is expert on tubing fab.
I used to use Master Metal Products in San Jose, CA. There are
others in the San Francisco Bay Area (such as Superior Tube),
but if you are near Seattle, I assume there are some capable
shops up there who have done great work for the aircraft industry.
Don't expect it for a low price, though. It's like that old sign I used
to see in a Shakey's Pizza Parlor:
Quality is like buying oats.
If you want nice, clean, fresh oats, you have to pay a fair price.
If, however, you can be satisfied with oats that have already gone
through the horse, that comes a little cheaper.