I AM STARTING TO AQUIRE PARTS FOR MY RESTORE. WE HAVE THE ROUND WINDOWS ON OUR BUS, CAN THESE BE CUT BY A GLASS GUY OR DO I NEED TO FIND A SOURCE? ALSO HOW MUCH FACTORY BONDO CAN I EXPECT TO FIND? WHAT ARE YOU DOING TO PREP FOR PAINT, SANDING/SANDBLASTING? THE WIRING HARNESS IN OUR RIG IS IN PRETTY GOOD SHAPE BUT STILL OLD ARE MOST PEOPLE REBUILING THE HARNESS FROM SCRATCH? ANY ADVICE WELCOME. THANKS, BOB