HELP NEEDED

[MEAT]

So I was out today on the Apex and noticed a bog when I opened it up. This got worse throughout the day. I couldnt go over 8500 RPM and the day I was out before it ran as normal at 10500rpm. It seemed like after about 7000 rpm it went blaaaaaaah and fell on its face. No power. No codes. I am stumped here. What do you guys suggest I look at? Thanks for the help

 

[Pro116]

Check to see if your air box popped off.

 

[MEAT]

fixed her today. I think the main culprit was the cap on the #4 spark plug came loose and wasnt making good contact with the plug. When I removed the plug the cap was up inside the socket.