Hello, I need to replace the cylinder I used to have, (it got dropped in the shower when it lost suction, and shattered). I'm 6" long and between 6-6.5"inches round. I am using a Mini Vac pump and 'was' using a body images 2.75" cylinder (although i think this was a little to big for my needs). Am I correct in thinking i would be better to drop back to a 2.5" inch tube. As the 2.75 tube used to try and take my balls inside too (quite uncomfortable). Is it worth getting a custom one made?