[HSSS427]

The local carb doctor worked his magic and it now seems to be running great. Here's the run down as I recall of what we did:
- Found the Power Valve was bad, so replaced that
- Changed jets to 73 on mains, 80 on secondaries
- Adjusted the floats - I had them way too low
- Spent a lot of time adjusting the idle mix screws. Tried to basically screw the secondaries all the way in and just use the primaries, but that didn't work. Do ended up adjusting all four. He said she was very finicky, so don't know exactly where we ended up on settings as he was working from a vacum gauge and RPMs. He said don't try to screw them in to measure and then return to the same spot as he'd tried that and it didn't seem to work ie when you returned everything back to where you thought you started, it ended up with a different result!
- Set the floats correctly with fuel just sloshing out of the sight windows if you rocked the car
- Changed the accelerator pump shooters to #40s - I only had 37s, so he drilled them out to 40
- He has it idleing at around 880 - 900 rpm - lower than I've ever been able to run it.
- Got initial timing at 14 degrees, and 18 mechanical with the 2 light silver springs in the MSD for quickest advance. All in by around 2500.

Things he said I should do, that we didn't have the stuff for:
- Install the 1/2" spacer I've got
- Install 50cc accelerator pumps on both primary and secondary
- Install a 4.5 power valve vs the 6.5 I've got
- Install a fuel pressure regulator to get the pressure to 5 to 6 vs the 7 1/2 it's showing now straight from the pump

After driving it he said it may still need more fuel & air, but he said before re jetting that we could install his 850 cfm and see what the result was. He said he thought the engine would probably use a bigger carb. But that's for later.

Thanks for all the help and advice, and if I find out anything else earth shattering I will post it here!
Thanks!
Scott