Tired of DIY!

Update:
Went a 1/2 turn more on the lifter preload and it runs much better.
Still louder than it was, but I was running .015 shims on the rockers shafts before. A few got bent, and waiting on replacements, might be contributing to the racket. I listened with a stethescope, nothing knocking or tapping, just like a really loud sewing machine.Same on both sides.

Put new FR5 plugs in and got all the old gas out. Gonna check new plugs this morning.

Got leaks on both header gaskets, guess Remflex are a one time seal deal.

The Proform 750 street carb is definitely whistling at the throttle shaft, but the idle is holding pretty steady, regardless.
I also have a Holley 750 vacuum secondary with the same problem. Would like to fix both at the same time.
Throttle shaft ribbons are what I need? Or some other bushing?
Any chance it's the same part for both carbs?
I am still doing coffee and breakfast, will look and get more info...

Took the car for a 40 mile round trip to a hot rod night at a burger place. Other than noises, it was doing pretty good, until I lost power boost to the brakes just as I got there.
Figured the fuse died on my electric pump, but it was running. Think the check valve may have failed, but hard to hear with everything going on. Will check with my Mityvac...just praying its not the booster diaphragm.
Fluid was full, but different color in the smaller ( rear brakes) pot. I run DOT 5, could burnouts at the track create enough heat to change the color?