I would try three things:
1: apply a chemical release agent first, then a couple of layers of wax.
2: try using a sponge roller for the GC50, but spraying is best, brushing on does not work well..
3: Vacuum will solve a lot of your problems, the EC infusion kit contains everything you need to do hand layup with vacuum bagging afterwards, or you can do infusion, both will produce panels with very nice finish, and even thickness. The kit can then be used to make a lot of other nice CF parts for your car ...
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