DON - I upgraded from 3G to 4G in August this year. We went thru our Cell Phone provider, We're on module #3 since then, first one lasted FIVE weeks, next one a couple months, this one we got a week before X-mas. I'm about ready to throw the thing in a snow drift if we had any snow around here!
From what I've read, with today's FWA high HP ag tractors, POWER HOP is a HUGE problem in some conditions where your pulling heavy drawbar loads. I've never run any kind of tractor with enough HP to power-hop but I have had trucks do it, everything from 4WD pickups and even had an empty 10-wheel readymix truck hopping on dry loose sand hills one day. BUT, the new approved way to ballast tractors is to air the drive tires up according to the actual weight they carry and add cast iron weight till you get your slippage in the 5-10% range. It also helps to pull smaller implements FASTER than to try to pull too big of implement. Running faster with smaller implements puts less load on drive train parts, requires less ballast, and compacts the ground less and you still cover as many acres per hour.
I always thought I needed to widen my home-made lawn aerator, sometimes I pull it with the 982 and the aerator is only 32-33 inches wide behind the 42-43 inch wide tractor. I was going to add a wheel to each end making it 43-44 inches wide, but lots of times I pull it with the 72 which is only 35 inches wide. But after this year aerating with the K321 in the 72 for the first time I need MORE LOAD. I might end up making two more wheels and getting a longer i" dia steel shaft for it for next year. But unless conditions are too wet I won't have to add any weight to the 72 to pull it. Back when I had the K241 in the 72 the aerator was a real good load in 2nd gear.