Kevlar bands come out of hard working units black or near black. The material seems too hard. The kevlar frictions for the drum clutch packs were the same way.
I build more than 200 of the 700/4l60 trans a year, most are performance units. The wide Alto red bands are used. You must have a nice flat drum for this band to function properly.
I've found that if you ask 5 trans people a question on something , you receive about 7 answers.
