I never bothered with a scratch coat for the Systems III clear coat. Like Tagger said, the room has to be warm. A spinner helps too. The thing that I found with the Clear Coat is that you really need to mix it well. When doing a batch, I would mix in a small plastic cup for a couple of minutes. Let sit for a couple of minutes, then stir well again. Get everything set up ready to go, then a final mix. Can do up 12 plugs at a time with this stuff. The key seemed to be mixing it well and doing it in a warm place.
Jigman
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