High LTFT need advice and opinions

[Brianorina]

Using OBD2 on my 01 CELICA GTS. At idle my LTFT is at about +26% and STFT runs around 0 to +8%. O2B1S1 seems to be running fine, but O2B1S2 is running constant at 0.7V. @1500RPM to @2500RPM LTFT shows minor changes going between +25% to +30% as STFT shoots up to about 10% to 15%. Both O2 sensors drop to 0.1V anytime RPM goes over 1000. @4000+RPM LTFT drops to 0% with STFT going to +18% to +20%. I notice the CEL goes on when fuel trim hits +35%. I have changed fuel injectors, fuel pump and strainer, fuel filter. I checked for vacuum leaks on intake side using Carb Cleaner but found nothing. Need ideas as I am getting more than just frustrated. At the very least, I've done a decent maintenance procedure as far as fuel delivery.