how do i stop resin being pulled past laps?

Hey everybody,
I have been getting into more and more color resin jobs. I cant seem to stop the resin from pulling onto the foam when I pull the laps of my first side with cloth over. Tape will not stick to the foam, or at least the tapes that I have tried. I can think of no "easy" way to do it. I can cover the transitions (basically the 2-3 layers built up being darker) from the laps with a pinstripe but these spots are too far in to cover up. They just look messy!!! Any help would be greatly appreciated thanks
mike
I have been getting into more and more color resin jobs. I cant seem to stop the resin from pulling onto the foam when I pull the laps of my first side with cloth over. Tape will not stick to the foam, or at least the tapes that I have tried. I can think of no "easy" way to do it. I can cover the transitions (basically the 2-3 layers built up being darker) from the laps with a pinstripe but these spots are too far in to cover up. They just look messy!!! Any help would be greatly appreciated thanks
mike