About a year ago i mounted a brand new OS 61fx motor on one of my fav planes. Some dickhead then decides to break into my shop and gather up a bunch of stuff and set it out behind the building in some plot to steal. Well my .61fx that had only 5 or 6 tanks of fuel through it was left outside for 5 or 6 days before i found out what had happened and by then all the head bolts were rusted and the carb was rusted shut. This happened to immediately follow two crashes i had the week before(one was pilot error one was equipment failure) and i was just fed up with my planes. Last week i pulled this motor back out and felt the gumption to fix it and fly. The piston and sleeve of this motor is flawless but the shaft, bearing, and carb are rusted tight. I sprayed some PB Blaster in it last night and i've had it sitting over night, hasn't loosened up yet. I was wondering if anybody had any suggestions for some way for me to save this motor without having to buy all new parts for it. Thank you in advance for any and all help you can send my way!