chill 14 remember you still have quite alot of pressure within the pipework, whether it is runing or idle.
I suspect that the oil type substance running down your pipework is, refrigerant and oil from your compressor, you definately need to extract whats left in the system( purge) have them re seal this, you may find this is heating the pipework, etc and regassing.
maxcars 1 you seem definately low on gas, you need a check both runnig (system working) and one at idle, you may just require a quick squirt of refrigerant to put you back into the green as it were.