had you been making them with 1/2 margarine and 1/2 frank's sauce? (it is quite vinegary, but i can imagine how vinegary it'd be if you used straight frank's)
also, are you putting the sauce on and then baking, or putting it all on afterward? (vinegar is volatile, so baking it helps mellow it.)
I have tried two recipes (three if you count one of the dips). They all used Frank's. I think one of them was when I was testing for AfR perhaps?
I thought of this recently because my father-in-law had dead chicken wings he got from some restaurant that were in a white sauce. He said they were really garlicky and not hot at all. Up to that point I had just assumed wings were never my thing. In reality I think I just dislike the vinegar flavor.
edit: For Frodo I have been baking them with the sauce on it. My idea there was to make it harden a little and almost glaze them.
ive never seen white wings and trust me, i see wings just about every day. you could try bbq sauce instead of hot sauce. mild wings also just means more butter than franks. but oh god do i love franks so i cannot advise this.