I have ignorantly been under the assumption that my 620 had a dry clutch (as I've said before, I'm mechanically retarded). Today, I realized it is in fact a wet clutch, making a vented clutch cover out of the question. So, can somebody please tell me in a simple explanation, what is the difference between a wet clutch and a dry clutch? What are the reasonings behind having one vs the other? Thank you all. And if we had a word for people who fish, it'd be "fisherman". But we do not have such a word.