The Torium has a bush (Nylon?) supporting the LH end of the Drive Shaft whereas the Trinidad has a ball bearing there. The Toriums all appear to have a Rod Clamp fitting.
Its a brash bush, take it out throw it away and replace with the corresponding trinidad bearing. it has the habit of wearing down the driveshaft and getting stuck to the frame. both reels cast very well, the torium 20 and 30 are some of the most popular surf fishing reels in our neck of the woods