Skyking, thanks for your note.
The AI is the Attitude Indicator.
The heater is tested per the AD and works great with no leaks.
The hoses out of the blower were checked and in fact replaced last year due to ratty appearance. No further leakage.
RTV is great! How did people exist, let alone maintain airplanes before it was invented.
But then again they had duct tape, oh well.
With the various leaks and hoses fixed or replaced, hopefully things will be better now on both the defroster and pressurisation front.
I am travelling next week and will fly it when I get back, hopefully with good news on all the issues on the squawk list.
Regards - Dave