I am only seeing low side pressure in the low 20's and high side of around 230 psi @ 85 F & 2500 rpm. This was after I added 12oz of R12. I wouldn't think the auxillary fan would be kicking on at these low pressures. I thought it would be closer to 250psi (??) but its comes on. Problem is my vent temps are only in the mid-low 60's, so I am thinking I am still a bit low on charge???