I think so long as you have no flaking issues you should be able to use water to clean the mud off with no ill effects, just go slow and let the mud break down so you use very little pressure. You can get the backglass frame pieces at [email protected] Steve Young carries most everything you could want including the fuses you want. Do you have a manual or schematics so that you know what type of fuse you need????Look in the bottom cabinate where the fuses are and see if they are labled, most pins are labled from the factory. If not google it and you should be able to get a copy of the manual in PDF form. Good Luck