Other was getting disjointed w/ too many side bars and false starts, etc., ... so thought I'd update.
Just finished cleaning up and putting new connector (threads stripped on the old 'un getting it off) at the connection at the weatherhead. It was somewhat corroded but not too bad so was a'feared it wasn't the issue and turns out it wasn't--no fixie. :(
I can cut the power _to_ the barn but the connections on the other end are at the hot location top of the pole before it goes down to the meter and then back up and over to the barn. Wind is now up to the point I'm not getting up near that until it isn't so much so--the manlift arm is flexible enough as is so that end will have to wait.
I'm thinking it can't be it anyway, however, as there are three others tied to it and there's not an issue in any other location excepting the barn while it's common to all locations.
Hence, it's coming down to there must be something going on between the connection in the disconnect/fuse box and the weatherhead--I suppose a packrat or some other varmint coulda' done something or perhaps there's even a connection/junction box in that run they needed to get it pulled--I've not yet done the full probe/investigation along the route although it's straight up the front wall of the barn thru the loft so I wouldn't think there would have been any need. But, there is an old horse/mule feed bin in the corner which covers up ready access/view w/o getting in and over it so anything is possible...