With the one piece engine mount that came with my 4-cycle frame mount kit, after mounting on the seat down tube first, there's about a one inch gap between the engine mount's front and the tube. The two brackets that came with it are identical and don't allow for any curvature of the frame, which is needed at the front but not necessarily at the back. I've seen a pic of the same engine mount on bicycle-engines.com but it has another piece to it and looks very adjustable. Their's looks like the same engine but mine is just the one piece mount. Should I drill a hole in my frame and mount one long, strong bolt thru the mount at the front and would it be sturdy enough using 2 or 4 bolts at the rear? I guess the 4-cycle mounts are somewhat different than the 2-cycle ones. My bike is a new Schwinn Point Beach cruiser. Pretty much the same frame style as a million other cruisers.