Mid day update!
I got the IH weight box reinstalled and filled with some steel bars I had laying around. With the weight of the box, steel and chains I added another 217 lbs to the rear. I've got 575 lbs without me in the seat. That should help off set the lifting the kwik-way can do. I hope to keep the rear planted while I'm using hte loader. This model kwik-way is rated for 750 lbs but I've lifted the 1650 with loaded tires and wheel weights. I couldn't move it much before the rear started coming off the ground.
Time to do a retest and see if I improved keeping the rear planted.
Time to go out and get the 1200 buttoned up so I can list it for sale!