Hello- wondering if anyone has had a similar experience or can offer guidance. I applied a medium walnut Watco Danish oil finish over tropical walnut with some wet sanding. Let dry 3 days and color was beautiful. To ensure all pores filled (looking to achieve glass-smooth finish) I used Varathane sanding sealer next. But, it dried somewhat milky in spots and did NOT sand out cleanly- essentially left a white, ground-in residue over entire surface and in spots actually dissolved/diluted the darker danish oil color out. Ruined the piece and am now sanding down to bare wood. Is this a known incompatibility? Thanks for any tips!!