Latest update...as of this morning, called Sailun and was immediately given the number to call TBC (not TBS) and got a recording that they will call me back with the information on where to get the tires I have (date code 3120) replaced at a local dealer INCLUDING mounting and balancing.
Since I got mine online from SimpleTire, I will need to get the replacements at a local retailer that can install them too. I'm sure many others are in a similar situation.
It may take a while, but it sounds like Sailun is on it. THIS time I will request that they mount the tires with the white barcode sticker on the INSIDE!!
EDIT: I just saw that Walmart has a set of Transeagle tires I hadn't heard about yet:
Set of 4 (FOUR) Transeagle All Steel ST Radial ST 235/85R16 Load H 16 Ply Trailer Tires
$724.93
Anyone have experience with these tires? Thanks