[Johnno]

Not specifically related to buying replacement parts, though images show the damage that can occur.

Thought I would show the left over carnage from a mixture of Scalextric AMG GT3, Scalextric F1 and Pioneer cars. There is a variant in items, from antenna, side mirrors, wings, exhausts, bumpers even a steering wheel.

I have glued the front wing of a F1 car with Selleys PlasticFix which contains two parts to the glue. 
Part 1 is the Primer, and Part 2 is the Adhesive (like SuperGlue tube but not). The PlasticFix does work really good, I suggest though, some careful prep work be done such as smoothing both joints before application and do a dry 'fit test' I buggered it a bit as the plastic sort of melts a little, used too much pressure and ended up with a ridge line, so had to get the trusty Rotary Tool and grind it down.

I've retained the parts for 3D scanning replacements eventually.

   
1 Parts Laid Out

   
2 Parts in Container