Also found that there was a very hard packed mouse nest in my pressure plate. The springs do not look like they are engaged all of the way. Is this why I have the slipping problem? Do I need a new one or can I simply remove the nest and be okay? The flywheel and pressure plate surfaces also look really clean, no rust, pitting, or hot marks.

1949 1.5 Ton 4400, 1969 c10, 1989 c1500, 1990 K2500, 2010 C1500 Crew