I've got a 4440 PS that I'm having issues with 7th gear. Tractor has just over 5000 original hours. I've got more experience and history with a 15spd, and this thing has me scratching my head. First of all it Has good system pressure and no pressure drops in any of the gears. I even bumped the pressure a little higher to see if it would act different. It is a little soft going from neutral to gear at any rpm, which could be modulation. Once In gear everything shifts tight and snaps tight until 7th gear. I realize a lot is going on to make that shift, but if it don't take, you can throttle it down and cycle the inching pedal and it will take every time. It will also pull in 7th just fine. Temp seems to make 7th a little worse. If you skip 7th and shift from 6th directly to 8th it will take gear every time. Ive studied the elements engaged chart and was hoping it was a C2 slip in the front pack, but I'm not convinced that's what it is. I hooked it to a sled and it spun the wheels in 4th gear at 17000lbs in 4th gear so that kinda rules out the dry disc on the flywheel or does it? Anyway what do you guys think it most likely is. I'm thinking about tearing into it when I get the 955 MoCo project back into one big piece instead of looking like I'm parting it out.