Thanks for the advice.
I did speak with my lhbs yesterday. After explaining my problem his first comment was that it sounds like I had/have a bug in my plastic fermenter(s). He too, did not blame the brass fitting, only suggested that I use a weak bleach solution in my buckets, overnight, before brewing again.
I will be in that store today, so I will take him a sample of both that have this odor/flavor. Thanks for that suggestion.
In the mean time I have taken apart my bayou kettle and boiled the fittings, valves etc. last night. Placed my only brass fitting in a vinegar/hydrogen peroxide solution. And, have rearranged my gear so that all equipment (post boil) has it's own sealed container and will now not come into contact with anything by me and the wort.
Klick, if my lhbs thinks there's a chance, I will keep these batches going and report back to the thread. If not, they will go down the drain.