Peterbilt cruise problem

I have a 2004 379 with a c15 and have constant problems with the cruise, replaced clutch and brake switch, never will just bump up to high idle, have to step on the peddle and set my idle to where I want it, the new thing now is I have to physically reach up and pull on the clutch even though that has been replaced and the clutch is sitting with no play in it. I am going to replace the clutch switch again and put a new clutch spring in it and see where that goes

 

Truck just needed a clutch adjustment, fixed the problem.