Coming home from work, middle of Denver traffic, 35ish mph, suddenly a big chunk of rock/concrete in front of me (4th lane in a 5 lane downtown I-25 hwy), I clipped it, no biggie, bike handled it well, traffic on both sides, not a lot of wiggle room. When I got closer to home at a stoplight, noticed oil dripping. Closer inspection, rock hit my radiator, and the oil is dripping from the "seal/washer" where the hose goes into the radiator on the left side. Radiator shield took a dent, but radiator seems fine. I tightened it up, still leaks (when motor running). My thoughts are that this is probably a minor problem, but I wanted to get some input from folks who have played with this part of the bike before. It is a very light drip, bike still usable, but I want to get it fixed. Any things I should be aware of before I start pulling off parts? I that a compression washer? I'd attach a photo, but not sure how.