Hello all. I have a McCoy .29 that i got for dirt cheap at an estate sale about 3 or so years ago. So it sat around until today when i was like what the heck i'll see if it'll fire, ( all you old timer die hard control liners better not read this or had better take your heart meds ) so i replaced the glow plug with a new McCoy and flooded the engine with ( insert pills in mouth now) 20% traxxas nitro and cranked it over by hand to un gum it, then i flooded the heck out of it again and put my glow plug iginitor on the plug and cranked her over and after about half an our it started to backfire then about ten minutes later it fired up and ran real smooth and sounded pretty good for being so rich/on the verge of exploding due to the high nitro content. Okay so after that long winded story of how not to treat a control line engine what i really need to know is the proper nitro % to run in it is and where do i find parts like head gaskets,head bolts,and the whole needle valve assembly so i can put my O.S. .15 back together.