flattie: Order the jet assortment from Summit or someone like that. It is a big help. Are these the same jets that were in with the powervalves?
I would put 88's in the secondaries and try it from there. I usually jet smaller in the primaries for a little better fuel economy and make up for it when it is really needed. In the secondaries.
Get some sparkplugs that are easy to read. I think I remember you used autolites. They are good plugs but not easy to read when trying to get the engine tuned in.
It is much easier to fix a rich engine that a lean one.