Hi Cassp...I'm Happy for You my Friend!...As for any Roland Part call 323 890 3700. Ask for Parts...Roland US is located in California. From My Past dealings of Roland products Manufactured in Japan if it's not in stock it's about 4 weeks...Stocked parts are delivered very fast. I don't know about arrangers from Italy,etc. I'm guessing that slider knob is used on other products,not sure?...Best Wishes...Your E-60 comes tomorrow. Well Mine Now I guess! AND Again thanks again for EVERYTHING.