Over the winter I purchased a Evinrude 8hp short shaft to use a kicker. The kid I bought it from had some trouble getting it going in the tank he had but did get it going and everything seemed ok. I could not get the motor to fire up this spring. Long story short is the kill switch is bad, no big deal I unhooked it and motor starts and idles fine. Tested the motor today on the lake and it idles great and starts easy but starts to miss when picking up. I got it home and did a little research and performed a drop down test by pulling the plug wires off to see a change in rpm. At idle pulling either plug wire makes the engine run rough. While in gear and the throttle engaged pulling the bottom plug wire has no effect on the engine. So all I really know right now is that im losing spark on the bottom cylinder when trying to pick up rpms. Im not much of a mechanic, can someone tell me what this means? Or possibly some other things to check to maybe narrow down the problem.