I applied Minwax Wood Finish penetrating stain to white pine cabinet. Wiped stain thoroughly, waited 60 hours before attempting to apply Minwax water based, oil-modified polyurethane, using synthetic bristle brush. All of this is exactly as per instructions on products.
The only thing I did that wasn't on the Minwax instructions was to soak my brush in paint thinner to release trapped air, then wipe on paper until dry before dipping in the polyurethane. This advice was given by several different experts online.
As I drew my brush across the piece, the poly immediately began beading up. I took another stroke through, now beading up through the entire length of the stroke.
I Immediately wiped the poly off and then wiped the area again using solvent. The piece may have lost a tiny bit of colour on that strip, but it looks ok.
What should I do now?