I am in the same boat as you Dave. I have new springs on my 1952 3100 and just the drive train in the frame. I cannot get the rear shocks to extend enough to stick thru the upper mount. They are close but not through. Even my 200# on the back of the frame does not move the springs at all. I figure when all the body parts, bed, bumpers, etc. get mounted it will finally drop down a little.
At least I am hoping so.
Chuck
