Here. Seems like it is a dirt/grime buildup problem, so I am going to open her up and do some cleaning. Thanks everyone for the feedback!
I just purchased a Super Advantage off of ebay for some few monies and it was delivered a week ago. It is now sitting in my closet unused and neglected.

I was excited to get it because of the extreme awesome that is the NES Advantage and expected the same quality standard. First thing to note is that the joystick is made by Aciiware and not Nintendo. I figured Asciiware was a good bet because of the excellent fighterstick they made for the Playstation, but this joystick is not even close to that.
The SA definitely has it's high points: Excellent 'feeling' buttons, good solid weight, decent joystick response- everything that a good arcade pad should have, but one unforgivable thing fracks this controller to the end of oblivion.
The buttons stick HORRIBLY. It isn't that the buttons themselves are bad, but clearance between the button holes and buttons themselves is non existent. This means that when you mash, or just happen to press the button a bit too far on the edge (which happens alot until you get used to the strange placement of the buttons) they stick down into the button-pit and do not spring up until you rip your eyes away from the TV and fix it yourself. And that is something you just don't want to do when you are on stage four of Parodius Da!
Maybe if the buttons were rounded more for clearance this could be solved (much like the NES Advantage) but for now this controller will remain in my closet collecting dust.
With that said- don't buy a Super Advantage unless you are prepared for frustration. Also, is there an affordable arcade stick for the SNES that doesn't suck?