hello. I just put together a new e5. started for the first time and the pin came off from the gear that sits on the out put shaft part(305-518) , plus the pin . and I think it band the output shaft. I got the e5 from experience RC. Why would this happen. They are out of parts. do you have this parts. My address is Eugene Rutenberg 3 Ashley place, Towaco, nj 07082.