Anybody have before and after experience with loaded tires?
Yeah, if you run low pressures like less than 10psig like I do fighting the "rough ride" they won't hold against the (new shiny) rims for traction...tire slips on the wheel and in high stress areas, like hitting a good sized bump) the weight of the fluid pulls just enough of the tire away from the rim to allow air in (tubeless) and your tire comes off the wheel.
So for that, I got rid of the fluid and adapted wheel weights and if not using my 3 pt for anything I made up a 200# blob of steel scraps with Cat 1 pins I add to my 2400. On the 6530, I carry around 13 psig and each has a 55 gallon barrel of antifreeze-water mix. Have had that since new and zero problems.
On the seat, I just bought replacements from TSC for the seat you pictured but these seats are made for the Ford type installation I have. The 6500 came with an air (compressor included) seat and it adjusts as you choose. The 2400 has an old MF bucket seat design, fully padded and lined, off ebay that is a low profile suspension seat with 4" of travel that is just right with the other changes I mentioned.
The turfs are 4 ply and the reasoning was to get more air volume and hopefully softer sidewall from the 6 ply industrials that came on the machine. Since the rim is 16.5 that puts it in the heavy duty category (no passenger tires on this wheel) so even at 4 ply, the turfs are still harsher than I had hoped; but better.
On traction, I still have the OEM industrials on the front and these match the gear ratio and traction is at least as good if not better than the OEM 12.5 x 16.5 industrials.