I have a model GMRS1902BL IT IS VERY OLD BUT WAS PUT AWAY FOR SOME TIME I GOT IT OUT TO USE IT AND IT WORKS GREAT BUT THE OUTER RUBBER TURN ON NOB AND PARTS OF THE BACK IS STICKY AND NOT FUN TO HAVE ON YOUR HANDS. WHAT I WANT TO KNOW IF I COULD BUY A CLEANER OR SOMETHING TO REMOVE THE SLICKNESS JUST WEIRD WHAT MADE IT SO STICKY OVER TIME. WAS NOT IN THE SUN JUST A DRAWER PLEASE HELP ME. THANK YOU SO MUCH EMAIL PKLOVELAND @LIVE.COM