This is my Symmons model M safety mix. It stopped giving me reliable hot water pressure. Needs a new spindle for mixing. To my dismay this isn't a ta 10 which every hardware store carries. I also bent the spindle cap a bit because I didn't heat it. So I need that too ... Any assistance if identifying the part numbers would be great. The house that it came with was built in 1957. This is likely original to the year of the home build.