A very close buddy renovated a new to him house. W/ a little bit of encouragement and instruction (phone) he installed on his own two 2T AC split systems, from soup to nuts, 10 years ago. My worker and I went to his house today and we did a normal intense routine. A part of what we did was to replace the LLFD and added a SGMI. Upon start up both SG's showed lots of activity and we showed Scottie the bubbling in the glasses. Upon cross examination of his work it was discovered that freon was not added to the 30' linesets. So we topped off the juice charges and he smiled and said,"What do you expect from me, I'm just a HO".LOL