Been a while since I posted in here (since I first did the VSUS trim pot tweak) but thought I'd throw out an update. My 65VT50 was out of warranty by about a month when I started down the path with Panasonic in June.. They told me at that time to see if it got worse before sending out a tech, which is why I was trying the DIY approach to the issue. While the fix made it much better, hockey season started in October and the blobs were noticable and taking away from my enjoyment of the sport.
I contacted Panasonic and started on the case again -- two trips out from the tech company for pictures and a tweak (VSUS low to high in service menu) and they diagnosed the issue as needing a replacement panel. Estimate with labor was $2,200 from tech company, Panasonic had a rep call from accomodations department to talk about options. She offered my a 65VT60 at a heavily discounted price (less than $1000) so I jumped on it.
They picked up my 65VT50 about a week and a half ago, I took delivery of my 65VT60 last Tuesday and couldn't be happier!
Panasonic stepped up the plate on this one, no doubt. I have a receipt for the 65VT60 and can get a SquareTrade extended warranty.
Keep calling them every 2-3 days to move the process along, you'll get there eventually!