Besides the head Gasket what could be leaking? Already replaced head,valve cover, Vtec Solenoid and dissy oring and Gasket

 

can it be the catch can in the back under manifold? or the sensor plug?

 

Look at the oil pressure switch. I had one go out on my brother in law's mazda..had to change a few things before we found out what the problem is. His car sat for a while, all winter, and I think thats why it started leaking.