I had that same issue- the clicking in reverse. my boots were not torn, although they are weathered..

I went and grabbed the turkey injector out of the deep frying kit, and packed it full of M-1 grease. gave each boot a syringe of fresh grease, no clicking 30K later.

worked for me, YMMV.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.