Tom, being new to armor you probably don't have any in your spares box so the next best thing may be to sew the broken vinyl tracks back together with some black thread. When you install them on the M88 you can hide the sewing on the bottom with a road wheel parked on top of it. Or you can check for an AM set for an early M60 or M48A5 tank the tracks were very similar and should fit your M88.