I always forget until the first 90 degree day here in VT that the 18RC in my 74 likes to blink the oil pressure light when shes been run a while. Never come full on but you can see the little devil going on and off. Basically the motor is old and too much oil is flown. So the question is what is the stock switch PSI and does anyone know of a switch with a lower PSI that i can switch out the stock one with? Thanks!