Yeah I had the same problem, I looked all over if there was a clutch fork boot for the AD 47-53 trucks, and to the best of my research there is no factory boot, so I made one from a tire tube, it’s two big ovals that are held together with copper wire as staples, one slips inside the housing the other sits outside the housing, both tight on the fork
There is a chance the 60s trucks boot could work with modification.
But without a boot, mine will build a new nest in there.
-s