I suggest you all try this test.
Park your tractor on level ground and set the park brake.
Load your FEL with something heavy.
I used 8 wet fresh cut 10" dia. firewood 18" long.
Leave the FEL about 12" off the ground, just the height you might normally run around the yard with.
Walk to the backside of your tractor.
Place your hand on the ROP about head height and push side ways.
I can make the rear wheel easily come off the ground.
Now I'm no WWF star (170 lbs 5'9"), in my dreams maybe.
Upon this discover, I have discontinued any FEL work without the MANDATORY ballast.
Try this on yours and let us know how you make out.
Winnipeg, Manitoba
2001
BX2200 (15 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market
B7000 w/Tiller (120 hrs)
1984 JD 316 after 687 hrs.