I use jumbo craft sticks, just glue them in the top groove, side by side (typically takes 2 a 3/4 sticks). I do nothing on the bottom. And so far so good. My girls have built up wonderful natural comb on all the frams in the first brood box without any issues, and its well attached, those sticks (IMO anyway) are just to give them something to start on. Once they fill those frames in that comb is well glued on ;)
I'll try to get some pics to post in the next couple weeks (when I add my super). Some of the comb they have built, and some of the technique I used putting my frames together.