that's... horrible! I'd go fix and fly it! you'll need to clean the cylinders though, and probably replace the o rings, you could probably find aftermarket parts on ebay, or some sites, and could probably find replacements using newer items as SOME engine will pobably use the same part. good luck on it, could I see some pics? also how old are you? because I'm not sure if ask your father first is approprate for you... well it IS and antique now. Someday I'll hopefully get my grandads gas airplane (it's a uh...oh man what do you call those thing they have cub in the name..., and they're usually yellow and black, it's not a biplane) it's at LEAST 20 years old, probably 40 or more.... anyways he has all the original airtronics equipment on it. I wish I could fly that thing, but, I can't fly a plane.

PS: are heli skills transferrable to planes?