Thanks for all the info. I have a picture of my control panel and I am wondering if the white joystick and the red jump button are originals. I thought that donkey kong came with a black joystick and an orange jump button. Just trying to restore my game to original so I am trying to figure out if these parts are factory or not. 

Black joystick, orange jump button and blue player 1 & 2 start buttons.
So if you want to restore your game to original, you'll need to get a Nintendo joystick. You can get them used for $20 here -
http://www.mikesarcade.com/cgi-bin/store.pl?sku=NIN8WAY or probably cheaper on eBay.
Edit: You'll want a 4-way of course. If you can only find an 8-way joystick, or end up with one that doesn't have a restrictor at all, you could contact this guy from an RGVAC thread --
Link -- to see if he still has any 4-way restrictors, or can make more.
Edited by saint. Someone has to be the first to knock it off ... I vote for me.