Moving the throttle usually isn't a big deal. Based on my larger Evo engine I won't buy another one. For a 2 stroke I would go for the OS 46AX. Very reliable and runs even smoother than the FX series. For a Cub though you will want to do a lot of slow speed cruising around so a 4 stroke may be a better choice. It woukld be nice to hear the opionions of other Cub owners. [8D]