Not anecdotal but empirical: here in coastal SC and hot areas all over the world I've had customers complain about their tiptops becoming misaligned. In every case, it's because the rod (usually in the tube and sock) was left in either the passenger compartment or trunk of a car, windows closed, or trunk closed, whichever was pertinent. And for long periods of time. This with the standard Flex Coat hot melt TT adhesive. I don't use epoxy on the TT for obvious reasons (in case I need to realign the TT with the rest of the guides on a section), but people need to be aware that the hot melt glue CAN give issues at high ambient temps.