i told you, the capacitor on the pump is likely 50 years old. theres basically no chance it has any capacity left. its pretty obvious, because the lights dim as if there is no capacitor on the motor.
as an electrician, i know there is little risk of danger. 12awg is actually sufficient for a 30a circuit under 100ft, it is only code that says you must use 10awg. code always steps up one gauge higher then you technically need.
and it is a 10awg wire. i suppose i could add a capacitor by the relay box in the basement, i might do that sometime but right now im more worried about getting the pressure under control.