The resistors are R5 and R6. Since you are already getting some bias you shouldn't need to increase them too much. Going from 1k to 2k should be plenty. The exact value is not important so use whatever you have handy.
Also after making the change and before power up, you need to turn the bias pots back down before starting the bias process again from the beginning. You can verify this by measuring the resistances across R5 and R6, which should be close to zero when P1 and P2 are set correctly.
crooner2264 - I noticed in your first picture that the thermistor is not touching the plastic body of the MOSFET. They need to touch in order to control temperature of the device, do not let it touch the metal fender washer, it could short out.