It sonds like you have taken care to install everything by the book.
The bummer is you have a ride you don't like, that's not good and almost certainly can be cured though the effort and willingness to experiment may be required.
I hope you'll at least try the blue valve springs.
FWIW, the 4-hole valve isn't my invention, I tried it at the suggestion of other long-time Connie riders and found they were right, it helped with sharp-bump compliance.
I sincerely wish you the best on this, hate to hear of a dissatisfied C10 rider.
Thanks guys, I'm willing to experiment, and will install the blue springs this weekend, and, I cut down my stock springs to the same length as my pvc spacers and will try that last if I don't like the ride after that. I understand that the newer emulators are scored in a way to make drilling easier. Its much better than before so I'm headed in the right direction.
My best setup to day. drill 3 add'l holes in the blowoff plate, and 2 turns preload on the blue spring. 15 wt. I run cut down stockers with about 5" cut off. the pvc sets spring preload. Racetech advises that you need at least 1" of preload or the emulator will unseat under pressure. Remember that with 1 .375" sag, 1" of that is nessessary preload. HTH, Steve
Steve, I meant I was going to put the cutdown stock springs on top of the .95's with the blue springs, 15wt and 2 turns of pre-load. Right now, I've got 6 inch spacers which brings them to the top of the tubes. I cut the wider wound part stockers to 6 inches and will use them. I'm holding off drilling any holes but I will most likely do it as its only a few bucks to replace them.
OK, installed the blue emulator springs today, boy, I got tearing apart the forks down to twenty minutes total, install and buttoned up! BETTER! Getting better, I can stay with this, thinking about drilling one more hole in the emulator disk, but this is a phenomenal difference I can certainly live with.