Hey guys, been pumping for many years, & bought the "Mr. Marcus" pump a year ago, & now have no room for girth expansion. Wondering if there is a cylinder bigger than the 3" diameter that this one has. I'd like at least a 4" so I can get some longevity out of it. I saw that Vacu-Tech had a 5" diameter cylinder, so bought ... read more
MAXED OUT (GIRTH) on the “Mr. Marcus” …what wider cylinder is available?