I just upsized from the 3.2 IMS to the 4.1 Acerbis tank because I'm tired of carrying the extra gallon on most every trip. My assumption is that the gas is fed by gravity only therefore if there is a loop or upward swing in the fuel line it won't flow well once the gas level drops signficantly. To combat that I was considering making a back to back Y fitting instead of the 4 way cross connector which came with the kit to tie in the added fuel lines. It would also allow me to route the left side tighter to the body decreasing the chance of getting snagged or hit by my leg. If there is some type of centrifical flow generated this is a mute point. Before I go through the trouble of fabricating one up I thought I'd pose the question.