I had purchased a Clarke tank for my TW and after filling it only twice, the top broke out of it the gas cap. I called Clarke mfg. yesterday and they just asked for my address and said they would send a new cap out that day. Now that is service. I do think that they may have and issue with the design/material that the cap is made from, but they are obviously aware of it and are handling it in a very responsible way. Thanks Clarke mfg.