Broken clamps/regulator bracket on 1972 trade wind

[Maggiefoss]

Hi,
We were driving happily along 101, stopped at Morro bay for dinner and noticed our clamp that holds our dual propane tanks steady had broken off, leaving our tanks just sitting in the holder without anything attaching them to our trailer! Yikes, if we had hit a big bump we had a potential firebomb dragging behind our Sequoia! Of course it's Sunday, an no RV parts place is open, but after looking at it agin we discovered the regulator is also attached to the broken clamp. Can we get just the clamp replaced , or do we have to replace the whole regulator assembly ??? I'm in south cal these next 2 weeks hanging out iny Airstream at the beach, do if anyone knows where I can get the part let me know!!
Thanks. Maggie Foss