Ive read of guys converting cap tubes to TXV's in reach ins, Any body do this regularly, does it pay off in the long run from clogging cap tubes in POE systems. Don't you need a reciever or large enough condensor to hold excess liquid? how would you figure out the tonnage of a box? I'm buying a problematic TRUE TSSU-27 second clogged cap tube. Customer wants to get a new one, so I'm buying it off him. I was gonna change the oil in comp. and maybee make a project out of it and put in a TXV. If it can be done, how would you size it properly? can I just take the BTU rating of the compresser?