I wonder if I should use the freeze method to take it off, like we do for Mylar? Might give that a whirl next time. I tried peeling it both ways...but my playfield is pretty roached, and I think there isn't much adhesion left with the old paint. Another thought is maybe using a chunk of dryer lint to remove even more tack from the Oramask. I'll try these things and report back.
Also, another question for those of you who use the Silhouette software to trace- Is there a way to "lock down" the JPG file onto the work area for tracing purposes? It is really easy to shift the image when you are trying to grab and re-position a line. Using the undo arrow works, but its extra clicks. I use Solidworks for 75% of my job, so extra clicks drive me crazy because my CAD brain is programmed to be efficient, haha.