I am making a set of cherry kitchen cabinets that are being stained a dark chestnut type color. Since I plan to spray cat. lacquer on top, I am using a Sherwin Williams Sher-wood BAC wiping stain. I sealed all the panels with a 1 lb. cut shellac before staining to avoid blotches, and then sanded with 220 grit before staining. However, I seem to be getting some blotching anyway that disturbs the look of the grain showing through. Stain was left in place for 4 minutes and then wiped off with a dry cloth. I tried mineral spirits and can of course lighten the panel, but I have not been able to smooth out the apparent blotches. Should I not have resanded ?