EJ20 accl/wake up enrichment

Tuning a WRX with 660cc injectors, using a LEMG3 with adaptorlink and have started with a WRX V3/4 base map. Found that a master setting of 6 was a good choice with these injectors. The fuel map is progressing well now that I beleive the IAT correction table is close to right but am still having trouble with a nasty hesitation when opening the throttle slightly but quickly. It is worse in the 1000/1500/2000 rpm section of the accl clamp table, after that not being an issue. The condition appears (by WB reading) to be a lean spot rather than being over rich but the symptom is the same if setting on the rich side. I have tried many number combinations in both the accl enrichment tables and in wake up enrichment settings but that has only seemed to improve the problem slightly and than only at one particular RPM section above. I am using TPS mode, it is spanning correctly and I also tried MAP mode without any better success. I am back to the base map numbers at present. Any ideas or settings other than the base map to try?? Cheers.