Here's what I ended up with. This is the goodridge setup we came up with finally. One thing to look at is the flare inside of the hose fittings. We found some domestic companies have the wrong internal flare. I'll look up the fitting numbers and pm you with them. The biggest thing I ran into was it takes about two weeks to get them. Also, the return line we used is a -5 bradied and hose clamped to the nipple on the return regulator/damper.