I don't think I'll be able to drill it out. How do I know which engine I have? 26, 30, etc? The truck (MT) has dual steering servos and square drive metal gears if that helps. I can get a 26cc head for $20, or a whole new 26 minus carb, pipe, and pullstarter for 90 at Dollarhobbies. Or if anyone has a good cylinder laying around, let me know. I had the blue loctite on the muf bolts, thinking the heat would make the red loctite fail. What to use?