I started to clean out the supply line today, but I wasn't able to get the faucet off. But when I unhooked the keg coupler, there were some very nasty smells, along with a few floating fuzzy bits... It needs a good flushing with beer line cleaner before we try to run good beer through it.
I managed to scrape up the coupling nut pretty badly too, so I'll pick up a new one, along with a proper wrench.
73 de KC0DZY