Hi All, Just found this site and thought I'd throw my latest at ya. I got called to a manufactured home and found a 5ton split(straight cool)bad compressor. I don't know who designs these things but the installation is a piece of work! The air handler is located in the utility room off the kitchen on one end of the house with the return just outside the kitchen door,so the only place it draws air from is right there and to top it off theres a supply duct blowing right around the corner.My plan is to run the return more to the center of the home shortly.(tricky all the ceilings are vaulted).Anyway,replaced the compressor and start components,multiple evacs,cleaned coils(both) and installed both suction and liuid filters, and charged her up. I am getting frostback all the way to compressor,suction press won,t come up much more than 45-50 lbs no matter how I adjust the charge(it's overcharged now according to the nameplate. Checked orifice size, and its proper for 5ton (93),fan speed is good,no restrictions in liquid line. Head is low also,and amp draw is below normal. I'm guessing the unit had icing issues before it went bad too. My initial diagnosis was lack of air or load,now I'm baffled.Larger orifice maybe? Too much 22 it frosts,too little same.Any ideas?????