Materials overlapping/acting strangely

[constellation23]

I've imported this assembly from Solidworks with the surfaces colored in. The casters on the right are what they look like in Solidworks, but some of them aren't keeping their color properly (casters on the right). The same thing is happening to the wood texture on the panels.
Any tips or suggestions?

Thank you!

[LayC42]

Did you checked the scene tree if the parts are duplicated?

[Will Gibbons]

LayC42 is dead-on. That's called z-fighting and happens when there are co-planar surfaces. You likely have 2 or more sets of wheels in the exact same place.

[constellation23]

Thank you! I found and deleted the duplicates, and it works now