Hey Doug,
It may depend a little on how well you applied the Delayed Reaction or how well it's burned in. I'd say if the DR is burned in pretty well, then I'd try what Aus said and remove as much as possible with Clean and Dull before applying the Magic Shine. Otherwise, you should be fine like Ex states.
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Rick Leong
Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff