I'll offer my best cleaning tip. Before even using the solvent, wipe the plane down with a dry microfiber rag from the auto parts store. They are so absorbent they actually lift the residue off the covering instead of smearing it around. On some days just the rag leaves my planes clean to the touch, and I toss it in the wash after 3-4 flying sessions. I still hit it with cleaner to get the stuff out of the seams and corners, but the job is much easier this way.