I recently bought 2 rotas for the Mazda Rx8 on Ebay. We now realize that the space on the rota where the 3 seals/rings fit are smaller than the space on the old rota. Are there 2 different rotas that fit the mazda RX8

I recently bought 2 rotas for the Mazda Rx8 on Ebay. We now realize that the space on the rota where the 3 seals/rings fit are smaller than the space on the old rota. Are there 2 different rotas that fit the mazda RX8. Are there 2 sizes of rings/seals?