Now that I've counted the sprocket teeth and chain links and ordered a new 530 chain, it looks like in some past postings that some members have indicated that they have had trouble with "regular" 530 chain rubbing on the case, after installing new chain. Have also now read where a member says that the chain that Andover Norton sells is a "narrow" 530 chain and allows a bit more clearance. Can someone weigh in here and tell me if that is the case, and may I have a rubbing issue after installing a new chain.