Use compressed air to get the dust off the coil wrappers. Spray nifti on a rag and wipe the coil. I use an old toothbrush to clean both ends of the coil, and wrap a rag around a scredriver to clean the barrell of the coil. Nothing worse than sliding a new coil sleeve in and having it either get stuck or push the dirt out on your new plunger/link !

I think that you can print out new coil wrappers - images used to be on sites such as Ballsofsteel (shut down recently)