Hi Richard, > No definite ideas as to why some Ikontas don't wind > evenly but wear and dirt seem possibilities. If I remember right, it's a friction mechanism, not a strick straight gearing. And, if that slips (or sticks in the case of hardened grease), you get reduced spacing. > I would still like to know the difference between the B > and BX models. I have never taken a BX apart, but I do have a number of them. Regards, Austin --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list