Any chance you can reduce the condensation in the line a little more cheaply by cleaning up your supply air going into the intake of your air compressor?
For example, making sure no moisture is getting into your compressor box, running a pipe higher into the air for you box intake, pulling some dry air from inside your house or garage to the compressor intake etc.?
Any little bit might help.
Also, I agree with the bigger diameter line advice. That reduces flow pressures saving energy and wear on the compressor, and your diameter will never "break down" like an iso injection system might - right when you leave town for a week.
Good luck on your fixes!
