I will try blocking the head port tomorrow..
what pressure is everyone's pressure-switch turning off the compressor? Mine does not cut-off until 145psi - at that pressure the compressor starts getting noisy and thats when the most oil blows by.. i'm thinking a lower-pressure cutoff switch, like 110psi or 120psi might be better.
I have a 120 PSI switch for mine but a 100-120 PSI would be fine.
https://www.amazon.com/dp/B07XZ415DS/?tag=wranglerorg-20
https://www.amazon.com/dp/B07XZ1FKYN/?tag=wranglerorg-20