You should put a trimmer of 20KOhms......This mod is on my adapter and I use to "push" things a bit more though....I use PSU's 3.3V rail @ 3.7Volts Also I had my adaptor at 3.87Volts......Replace the Vchip trimmer with a 20KOhms or with a 50KOhms so as to have more adjustments.....