Your first coat of poly was unnecessary; the polyshade would have been the
same without it.
There is nothing wrong with polyshades; I used some just last week. Some
G1S plywood was worse than I expected on the bad side (for the backside of a
cabinet door panel); and polyshades hid the defects pretty will. You just
have to realize it is more of a semi-transparent paint than a stain.
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