I changed out the old drain from a bathtub and installed a new drain with popup shutoff(my own made up word). The drain came with a rubber gasket. I installed the drain with gasket and putty underneath the gasket. After watching a couple of utube videos, I think I may have messed up. The gasket should have gone between the shoe and underneath of the tub and the putty only should have been used between the tub and the ring of the drain. Correct? (I hope I am explaining it correctly).