I don't think this is a fair statement to make as all of my toppers are made custom to your order specifications. If the new tables are slightly different in size, any new order will fit them just like the older Barrington tables.I can confirm that @rjdev7 toppers don't fit the new version of the table perfectly. I have the same ring around the entire table. It doesn't really make a difference in play but it is slightly annoying to see.
If you're saying that an order you placed for the older style no longer fits the newer Barrington tables, then that's probably true if the dimensions of the tables changed with the new model.
In general, I tell everyone, measure your table before placing an order. Some folks are ok risking it and using "standard" 73.5 x 31.5" dimensions but the new line of Barringtons makes this even more important now.