So you still have the stock downtubes,cats and resonator ??? the more air passages you open up with porting etc. will lower your boost a little. My car was making 11 lbs before i did away with the stock exhaust and now about 9lbs.
There is a good piece in the FAQ about nailing down boost/vac leaks,you could try re-sealing your IC tubes if you have not recently done so and zip tie vacumn hose connections around the engine. Sounds only a tad low anyway.
good luck !