Tired of water seeping through the side window seals on my hard topper, I followed
this recommendation and removed the lacing or lock striping in the middle of the seal, popped the window out, removed the seal, cleaned the window rubber and fiberglass top, applied black RTV sealer in the groove that goes fits on the fiberglass, put rubber back on the fiberglass top, applied sealer where the window fits in, slid the window in, re installed the lock stripping
(very easy with a Leslie 47000), cleaned up the excess sealant and last step will be to re install the metal clip when the paint dries.