Assuming you refer to my post, I went to a very large truck tire dealer in my area.
He did a search and found them in Ontario (I am in Quebec).
I had tried just about all tractor shops (maybe 15 or so) with no joy.
The truck shop was super well equipped to do the work, in fact flat rated the job.
Actually was in and out in about 1.5 hours and that included the cleaning/painting of the rims as well as the beetle juice.
They pumped out the old CaCl as well.
I did bring my tractor to the shop, but they could have come to me for a price as they have shops on wheeles as well.
If I recal, the fee was $40 per tire, all included,