I have one bad stock mount on a stock motor. I have found several sources for replacemt mounts, some require that I ship them my mounts and they send them back refurbished. I wolud like to change mine without having to pull the motor out. This would require getting a set of mounts without removing my existing mounts first. I want a quality mount that will handle up to 500 hp. Can anyone recommend a source that can suite my needs??? Has anyone chnged the mounts without removing motor?? THanks.