Back again. I fished a length of rebar tie wire through the old copper tube, as suggested earlier, so when I pulled the copper tube I had the wire to guide the new copper tube through the block. Now my problem is the fittings supplied in the kit from the Filling Station are too long and will hit the push rod cover when I install it. Has anyone ever used one of these kits and how did you make room to route the copper tube behind the cover? Do you think I can get a 90 degree fitting that will work? Thanks John