Not that I know of....
F/glass is layered into molds with Epoxy on epoxy build up... as is carbon fiber.
If you use the same brand...( maybe rough the surface of the older "set' epoxy for a "key" to grip on)..
..you should be ok.
JBTW...how do you propose to "widen" your tracks????...have you tried spraying them with Teflon lube first?
jo