SLOW DOWN!!! this is giving me a headache... I can't believe this thread is still going.
Bowhay: I am not the smartest guy on carbs either, but slow down & lets go back to the basics. I agree- valve seals are not why this thing has no/poor idle & is rich.
1. What the is the vacuum read at idle around 2K RPM???
2. Your jets appear to be too big like Tod said.
3. Is the carb too big for the application???
4. Flip the carb over & notice the adjustment for the secondary butterflies... where is it set??? You can over adjust this & cause more problems. have you messed with it?
5. WHERE are the floats set??? primary & secondary??? You said they were "fine"... what is fine to you??
6. Like Tod said, your cam spec will cause a certain amount of vacuum (or lack thereof) at low speed/idle. If you do not have a lot of vacuum at idle, you may be dumping fuel & not enough vacuum to compensate for it. This is why some folks will drill little holes in the secondary butterflies.
7. Are there any other vacuum sources on the motor (P/B Booster) etc...??
8. What distributor? does it have a vacuum advance? Manual? If vac advance, is it the low vac style?
9. Low vac will also dictate which PV you should use as well.... it has to have enough vacuum to open. To determine this, get a vac gauge reading. Randomly changing PV's will cause more confusion.
Lets get all the facts straight. One adjustment at a time without tearing apart everything... note the adjustment/improvement. Once all these facts are answered we can help you better. Scoot