Drain the fuel and fill with ethanol free fuel. There are some interesting videos on you tube where they store parts in regular fuel with ethanol, the same thing with stabil and the same with ethanol free fuel. Ethanol free did the best by far.
RC uses different gaskets depending on the valve covers. He had me use rubber ones on mine.
https://www.gn1performance.com/proddetail.asp?prod=BlkTAValveCoversEngravedBlackBreathers
We glued the gaskets on the valve cover with black rtv. We put them on a perfectly flat surface and weighted the...
Replacing parts multiple times??? Probably not the parts. The connectors are the real problem with these 33 year old cars. The tiniest bit of corrosion that can't be seen or a connection that is loose but appears ok is responsible for almost every single problem I've ever had since I bought...
20 inch pounds possibly but not 20 ft pounds. I couldn't find it in the manual but carburetor to intake manifold is 15 inch pounds so it should be in that range. I've always just tightened them by feel.
http://www.hydratechbraking.com/brakeunits.html
Unfortunately finding rebuilt units at parts stores has become problamatic. I have 2 units, one of theirs (expensive) and an old parts store booster.
The heater water valve is closed when the temp. is selected full cold regardless of what the mode selector valve is set on. You can look at the valve under the hood and see it clearly. MAX is just like RECIRC on newer cars. You keep recurculating cooled air it will get colder...
I converted to 134 years ago. Kept everything original except for a new receiver dryer and a different expansion valve. Adjusted the pressures and my AC is way cooler than it ever was with R12.
I'd get the wheels straight (steering wheel at the 2:00 position) disconnect the steering shaft from the box, turn it until the wheel is straight and reconnect the steering shaft.