Seems that the spinner will not pull over 680 with a full blend at rates of 500 lbs per acre at 16-18 mph.   It will throw an alarm for slow spinner speed.

We seemed to settle on a 75 ft at 700 rpms but it will not hold 700 rpms with the big rates?

Dumping into loader and weighing I got like .25?? on bin 1 and .18? on bin two. 

Also it seems about every dang fitting on the steel tubes on the side of the spread leak.  What are they a flare or o ring?  We have put enough wrenches on them and will break the fitting if anymore?

This is a brand new box on a 4300 Case.   I see a pretty cheap 3020 G4.  What the diff from a 4000, no twin bin and stainless chain?