Greg, my experience of ME77 is also bad. I did not use it before. I liked the ME99 back in the 80's.
My K2 used an ME77 4.0-18 rear last year, beginning of this year. Worst tire ever.
Really short life, 3831km. I got a bad reat brake slip when it was new. I cannot remind myself of any other tire slipping that easily on a dry asphalt road before.
The ME77 center grove were gone on 1/3 of the tire, it was 2.5mm deep as most on other side. Tire had no runout causing bump/wobble so the tire itself must have had uneven thread depth.
I'm sure Michelin Classic Road 4.0-18 is a much better tire. The bike got it in June.
My K6 has used Michelin Classic Road 130/80-18 on 3" wide rim. First tire last year, 8500km.
The tire on now will make another 1000km or more, have done just over 8500km so far. Handling still OK despite a little flattened.