First post, here goes: I am the proud new owner of a '68 C150. Mid-time engine, great compressions, and flies like a dream, though I do have a couple questions, as someone who has most of his time in a 172. 1. Oil drips. I have read the O-200 is notorious for them. It drips after shutdown, and periodically. It hasn't been burning any more oil than usual. Sometimes more drips, sometimes less. I wipe it up. Normal? 2. Shimmy. Sometimes, when the yoke isn't held full back during roll out, I get a pretty good shimmy, enough to vibrate the dash and shake the panel plastic and instruments. Not all the time, but every couple landings. Dampener? Loose scissor? Maybe it's my landing? 3. Rattling noise on climb out - only noticed when tanks are full. Comes from the pilot's side, sounds like a seatbelt out the door, but it's not that. Everything seems to be secure, and it stops after about 15 mins of flight. Door seals? Antenna? Screw loose? Thank you in advance.