Power Line Noise resolved. The local utility came by and we tracked down the source....a continually arcing lightning arrestor with the rubber boot around the spark gap blown in half. Noise has now dropped to a much more manageable S-5. but it uncovered a whole family of pops, crackles and tick tick ticking sounds I never heard before.
But at least 160-80 and 40m are now fn to operate again.
Utility linemen were great to work with and did everything I asked. Actually finding a source ( that was also costing them money) didnt hurt either. IE do your homework first and just guide them to the pole or poles in question. Make sure they go up top and inspect adn ticghten ALL the hardware. In our case I could see they gave some loose through-bolts some extra cranks. BTW The line carried 3 phases of 7200v on steel poles. They also voluntarily changed to phase in question's top insulator. And the guys advised anytime a tree has branches or twigs touching their lines it will usually result in substantal RFI. So if you see lines running through trees, report it and action will be taken. They will first ask the homeowner IF they can cut back the tree. In our case, they were denied, and backed off, instead reporting the problem to HQ for legal action.
Good luck with your PLN. Utilities are cooperating!