I have done some reading on Bump Gate and the under-fill seems to softern at 70 degrees and above, maybe that's why it's set to 68, saying that from now on I'm recommending to set webman to 65 degrees as a maximum temp and start the system on 33 percent fan speed as a minimum. Dynamic fan control is the best preventative step you can take to help prevent system failure of the RSX (in my humble opinion)
I have recently done a refurbishment, the console would give a flashing red light when you turned it off. When the system was cold it would give a flashing red light the first few attempts when you trued to turn it on. And it would shut done randomly mid game on TLOU. Syscon reported both 1001 and 1002 errors. I added two tantalum caps on the RSX side and two on the CPU side. Console now runs error free, always starts from cold and doesn't flash red when you turn it off, it also runs TLOU with no random shutdowns so that's a success, as I only piggyback the caps little heat is used so I can be sure it's not a CPU or RSX false positive result.