I had the air cleaner off of my '91 over the weekend.

I noticed a small diameter coolant hose under the air cleaner - it appeared to
be rubbing on the bottom of the cleaner such that the hose was noticeably
thinner in this area.

Seems a bit of a design flaw - I'm going to replace it, and perhaps slip a
piece of larger diameter stock over the rub point in an attempt to prevent
this wear in the future.

Y'all might want to check yours.

-Blaine (not a southerner despite the "y'all")