So I just got a "free" DR 350. 7,400 showing on the odometer. Starts and revs. Slight ticking in engine, no knocking. It's got oil out the tail pipe, the right side of the rear tire looks armor-alled, but there's no smoke. I've never had a DR. I'm wondering if there's maybe a chronic problem with valve seals or head gaskets or something. I admit I haven't even checked compression... I'm looking for some of your experience to help me narrow down the diagnostics if possible. Thanks!