Hi Daniel, you might find my post; (Click
HERE) may come in handy in giving you a good regime, for routine maintenance of your Scotty, and in particular the chain-case area.
Regarding the handle-bars and its cover...second hand units, in good condition, may be available...just send me a PM and I may be able to help.
Re: the sprockets, as a Model 45 owner myself, I feel replacing them at this time would be over-kill, mine are over 34 years old and have never been replaced...admittedly there is some wear...but not causing any probs at the moment....save your penny's and replace them down the track...Just keep the dirt out, and grease regularly...Yours are particularly in good nick for their age!
Keep us informed of your progress Daniel, and pics please as you go along.
Best wishes,
