First things first I have a 2002 xr6 SN- 0T444919 150LXR6
Have been having few issues was boggin down and the ball was having hard time staying hard. Since then I put new gasket kit in fuel pump and the diaphrams were tore up as well as a gasket was not in god shape.Also I have replaced fuel filter and had carbs cleaned. Now there was some improvement but i still have a problem where it seems if i run at exaxtly 4000-4100 rpms it will all of sudden drop about 600 rpms if i feather gas it picks up again but if i hold it on that rpm range it will drop down again.Never seems to happen at 5k+ rpm. I dont currently have acess to my boat im just trying to trouble shoot for next time i get back to it. I was wondering do you guys think maybe with all the bogging down i might have fouled a plug could that casue something like this?