Has anyone had problems with the 4L60E tranny?

I've rebuilt my tranny several times and keep on snapping 2nd band clutch..

I'm using the best stuff available, but keep on snapping the bands. Has anyone had this problem before?

I know I'm not pushing that much power but geeze, its starting to get annoying to constantly rebuild it. I know my line pressure is close to stock setting, so I'm clueless.

help