I went and ordered a new camshaft for my 650r. It is a HRC copy. Anbody using anything like this with the stock piston? Any advice on the install? Do I need to pull the side cover or can I use the peep hole? It does not have the auto decompression. Also I opened up my airbox and pulled the core out of the stock muffler. I am up to a 182mj and it is a little lean on top still!?? This xr is used for Super Moto and street use mostly and that is why I am after more mid/top end power. Anybody have any idea what kind of power this will produce? Idle quality? Starting? I am not too concerned about the loss of the auto decompression system as I always use the manual one for starting but I wonder if the increased overlap will make it tougher to start. Thanks for the help!