Installed the GMU 11 using the previously made spacers. Used a non-magnetic screwdriver and a homemade aluminum wrench for the GMU 11 screws. Installed a wire tie block (Mouser, MFG PN LHMS-55-D). Cleaned up shop and tools from the pro seal session last week. Found heater valve, bolts, nuts, sealant and instructions. Ready to install as soon as I get mineral spirits for cleanup.