Bill: Maybe something like aircraft seat belts in 1:32 can do the trick? It's probably easier to use than fiddling with tiny buckles and foil.
Jacob

Bill I know, I know . . .

For me that could possibly mean the build goes back into the stash for, oh, maybe a year, until I just happened to stumble across some really neat way, in the ARMORAMA blogs, of making seat belts from scratch. (OR SOMETHING LIKE THAT!)

Or . . . Eduard makes a etch set for the M4 HST that includes seat belts: #36072
(Which, in this case, is what I did for my build, this time around!)

"Safety First"...