Minwax's WOP instructions say to wait 2-3 hours between coats. What should the surface feel like before putting on the second coat? The temperature and humidity in my shop are quite decent, but are not the same from one day to the next. so I need something besides the clock to go by. Also, once the final coat is on, how long should I wait before buffing (let's say in "room temperature" conditions)? What do y'all use between coats? (e.g., sandpaper (grit)? non-woven pad? steel wool?) WOP has been a challenge for me -- would it help to thin it a bit, and do more coats until I get the hang of it?