It's raining this weekend so I've decided to camp in the garage and build a pair of arcade sticks for the 7800. I have a Happ Competition and some arcade buttons that I've wanted to do something with for a while. I've used a terminal block and cable from a broken Proline to test wire before I build the box. The directional works fine but the fire buttons are wonky. I put 560 ohm resistors inline to each button from pins 9 (yellow) and 5 (red). Pin 6 (orange) is run direct to each button. 2600 mode seems fine but in 7800 mode the buttons engage automatically - almost like auto fire. For example, when I start up Xevious it goes through the player select screen and immediately starts firing until I hit my buttons. I know that a lot of folks here have built sticks. Any suggestions?
TIA!
TIA!