Button? I think you meant knobs right? Well, in the case of your strat, basically you take a plier and pull them out. That's what i've done. Although it's going to leave an awful scar on your old knobs but since you're changing the old ones, there's no point in keeping them in good condition, right?
Er.. I don't know about the other strats but i sure had a hard time pulling out the volume knob of my strat. That's why i ended up with a plier. Well, maybe it's because I've never pulled them out since i bought them about 10 years ago. :wink:
Anyway, if you could pull it out by hand, do it by all means, but all effort fails, get the plier.
read somewhere ... u can use a cloth .. those that u use to clean your guitar ... goes under the knob and around and twist at the top until the whole cloth is so twisted-up that it rap ard the knob ... then, gently lift it up and out comes your knob w/o any harm ...
Thanks for all your input...I'm not changing knobs...my current knobs are crooked...I wanted to make 'em straight so I asked, but apparently, they're crooked from the inside...