I'll send him this thread link and see if he won't answer you. This is WAY out of my realm of experience...

 

Demonstration pics taken of the spare set of cams last night for your viewing pleasure... As you can see, the marks end up a few millimeters ABOVE the heads.

http://i298.photobucket.com/albums/m...otoca-5100.jpg
http://i298.photobucket.com/albums/m...otoca-5101.jpg
http://i298.photobucket.com/albums/m...otoca-5102.jpg
http://i298.photobucket.com/albums/m...otoca-5103.jpg
http://i298.photobucket.com/albums/m...otoca-5104.jpg

Cheers!

 

If it's just3 and 4, check the intake boots. Mine were all looseexcept the #1.Itwas the only thing holding the carbs on. That'll make it run like **** 4-sho. Make sure that the carbs are pushed fully into the boots too. If they are only partially pushed in, the boots can suck air. Alsomake sure the boots are not cracked from heat/age/dry rot and make sure they are complete/no chunks missing. Good luck.

 

We were having issues with 3 and 4 as well. It was the cams...

Did you guys ever get your bikes sorted out?

 

how hard is checking the cams do you need to take the engine out????

and which manual should I buy if they are different?

 

You should be able to download the factory manual from this site somewhere.

 

download manual: http://www.cbrextreme.com/forum/index.php?board=9.0

as for the cams, you don't need to drop the engine, just remove the stuff above it (tank, airbox, etc) and then unbolt thevalvecover. be sure to buy new valve cover gasket when you do this.