Has anybody had trouble with the buttons not fitting right?

I recently installed the darkstorm smoke lens I got for my new empeg, and when I put the front piece back on, the right button got stuck. I had to leave the cover pretty loose, and even then it would get stuck sometimes. This morning I used some sandpaper around the button and fixed the problem. Then, the bottom button had problems! I just left the bottom left screw slightly loose and it's fine. Still, kinda strange.

I attribute to the fact it's a MKII (not MKIIa) #243 and all the bugs hadn't been worked out of the molds yet.

I guess it's my first hardware hack! Now I gotta install another disk and hijack it. Work and installing the amp/speakers/sub in my car so I can listen to it got in the way of hacking on it...