what would be your diagnosis?????

1) What brand and part numbers of valve seals were used after the tops of the guides were turned down for the spring cups? 'New seals' does not tell the whole story on that. We need to see what type of new stem seals were used.
2) Did you adjust the secondary idle stop screw? (The t-port stop that AJ refers to...) The idle mixture adjustment symptoms point to that.
3) Did you change the PCV to one that closes down at a lower vacuum? The stock Mopar PCV's will not close down properly with these low vacuum levels. The 'idling up' when you close off the PCV hose is a clear indication that there is too much air coming in via the PCV at idle.

You NEED to take care of 2 and 3 above or you are chasing your tail.