I try to avoid put any solvent based chemicals on my clear parts...I even avoid touching them...Certain solvent based stuff has crazed and fogged many of my clear pieces, but you can try. For stripping a whole model, I buy a gallon jug of laquer thinner from the hardware store since it's stronger than the hobby-grade thinners. Stick the model in and let it sit over night...Put on gloves and a mask, pull it out, and wipe all the paint off. Finally, i let the whole thing soak in soapy water to remove any more thinner and other stuff. If you do manage to strip your clear parts of paint successfully, coat them in future afterwards for protection...btw, I've never used scale-coat.