Is that a vapor(suction line) filter where you have the cap tube wrapped around??



One trick to gain sub cooling,thus efficiency, is to soft solder the cap tube to the copper line and filter,you will get much better heat transfer. Just use a low temp solder like 50/50, clean parts well and flux. I like a flux for soft solder called no-lox. Some fluxes will turn the copper green if you don't clean the remainder off.you won't be able to soft solder to the ss line.

This is done on a lot of fridges right from the factory.

Great looking rig !!!