Hi Dunks, all the sprockets look in good condition for its age, plenty of time left in those......Just keep them well greased, with a good quality grease. wink

Re; removal of the rear roller sprocket, I have not removed one myself...I haven't needed to.....However, browsing the Scott Bonnar threads in "Repairs and Maintenance" will help you find an answer. Here's one....Click HERE
Hoping this helps....
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin