Y'all have been soooo helpful! I decided to go with the AZ Trillium
guy, who says he will be there tomorrow and will overnight them to us. (provided he gets my check, which I express mailed and he should have had it yesterday!) I'm paying $95 plus $25 for overnight shipping. Trillium
Outback in Calgary would charge $157 plus $30-$45 for "expedited shipping", which he said is 2-3 days. I maybe could have gotten them 1 day earlier but would have spent possibly $80 more. I called McMaster Carr and they had NONE with a 3/8" offset in any of their 5 warehouses.
Thanks to everyone who chimed in. I'm so happy I found this website. On several occasions, y'all have saved us from reinventing the wheel. Campers are CLEVER people!