It took a little while to locate EPROMS that would work for a ROM replacement/upgrade, but success! I’ve made a backup of my original ROM (ver 4.13) and burned a new one. I picked up the ROM file from http://babel.de which is a great Amiga resource. Ralph Babel, thanks for the update 🙂
After Brutalizing myself with the PCB45, I found a Canadian company selling UV Eraser and GQ-4X combo. Wow, the difference in setup is night and day… I know that this model doesn’t have clock support for the weird Commodore ROM’s, but as a general purpose ROM burner, this one was pretty easy to use.