Dan_Ed,
You are correct sir, that my manual as well says only the use of Lighter Fluid as a cleaner.
Why I thought alcohol, is beyond me, and it seems like so long ago, that I do now forget what I actually used as a cleaner? lol
I do have lighter fluid around here, but if I did mistakenly use Alcohol, that could be the reason why I'm noticing a brownish tint to the Applique Overlay Sheet?
As another poster has mentioned though, the Protactor seems to have no other faults other than this brownish tinge, and certainly doesn't appear to warrant a return all the way back to Hong Kong.
I did email Yip, but haven't heard back from him. In any case, I'll live with mine, and as I've previously mentioned more times than I can count in other threads, it is a really great tool! Mark