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Location: MA, USA
sorry ,All is OK. last couple of days I was buying new harley. I dont know about O ring problem with this motor . I am currentyl running 2 of them in differant profile planes with no problems . the motor has never had fuel to it . How the motor is broken in and taken care of greatly affect it's preformance and longjiverity. most flyers over prop their motors causing overheating and damageing bearing . I use 14x6 xoar with flawless results. It's still for sale. thanks dave.....