Just got my new "concours" A/C lines from Classic Auto Air. Unfortunately they are nowhere near "concours". Suction hose does not have original 90 degree bend at end of hose and sight glass line is a lot larger diameter than original. Have a few sets of origials, none perfect though. What is everyones thoughts on using 50 year old lines for my A/C? If I find ones in good shape, am I ok with using them? HELP!