Forget glue-on dial feet. Unless you have a feet-soldering machine, the right size dial feet and know what you're doing, get dial dots. Dial dots are fantastic, anyone who says they aren't a worthy replacement clearly has never used them (or got cheap crap from China). 3 or 4 dial dots will secure any dial sufficiently - no wiggling.
Dial feet come in various lengths and widths, you need to find the right ones for your movement, shorten them, position them correctly (which is a huge pain in the ass unless you have a template), abrade the area on the dial where you want to glue them etc. etc. If the feet are just slightly off position, the dial won't be centered.
You don't need to do any of that shit with dial dots. Trust me, get dial dots!