We do not believe that is a difficult alteration, though no reason to do so. The Vaults were a response for oil bath hubs we do not like and were popular at the time. Other competitors were using Oil Bath and we had frequent competition selling oil bath against us. Customers were requesting Oil Bath and it was a factor in sales, and they were less quality. The Vault we do feel lubricates better though we have no issues with a well cared for grease unit. Those other competitors are all using Vault hub at this time. At least all we are aware of are.