The coil sleeves would be stuck in the coil.  There will be a lip on one of the coil ends.  You can run a rag through with novus and it will pick some dust up.  Check the plunger and nylon link for damage and play as well as the coil stop for damage, or better still buy another kit and replace the parts.  

Cheers, found the coil sleeve after a bit of poking around   novus is what I am using so that's good.

Thought about buying the kit to replace the parts but as has since been pointed out to me it's not really needed. The metal parts look like they are brand new and seem pretty thick, doubt any damage sustained to those parts. Might just look at grabbing some new sleeves and bushes even though they look ok.

Slight wear on the bushes where they enter the playfield but otherwise look good.

Thanks for the help everyone.