Hi there. My 1995 1100 GS has a very loud kkkrrrrr noise when engine is warm. It is linked to the revs. I discovered that the tb shaft is maybe worn out causing this noise. I used a stetoscope to pinpoint the noise. Can the tb be refurbished or is a new one the only alternative? Who can do this in SA and where can I find the kit? What about the ticker killer?