Hey Crazy, I don't know about the R3T but even at that, you should not have to worry about any fuel lines needing attention. There should be a long enough service loop to accommodate the tank movement for service beneath. I'm certain you are aware of the standard Rocket "under tank" access. There is a button head, hex socket screw beneath the speedo & tach (centered between the two) when removed, allows the front of the tank to "lift" up (hinge is at the rear of the tank beneath the seat front). On the right side of the upper frame is a couple of plastic clips which hold the "prop wand" which is used to support the tank during service beneath. The stub end of the rod drops into the screw hole, the "fingered" end goes into the hole on the tank bracket.
Not certain how the R3T works but if any of this is applicable, there ya go.
See ya.