This post is mainly towards grayracer and those with far more motor knowledge than me. My bike is spooging more and more out of the crank case breather... The bike is 4 years old and never given me a lick of worries however i think its gettin time for the dreaded top end rebuild... A few questions for you in particular. I have read numerous debates on high comp + overbore, high comp standard bore and so on and so forth... What is the best setup in your opinion. If im going to tear this apart and do it i want to do it right and get more power out of it (RELIABLY). Getting parts is of no issue for me so im just looking for the best combination. Bike is a bone stock (engine wise) 02 wr426. Only thing i did to the motor was oil changes and a extended fuel screw. What i was THINKING was High Comp Piston, probably go with new valves springs and associated hardware, i have acquired a 06 YZ Cam with auto decomp which thru a previous post was determined i should be OK as long as i time it correctly. And possibly getting my flywheel ground to give me a little more snap off the bottom. What are your thoughts and opionons on the high comp stuff? Will a YZ flywheel fit and still retain the lighting stator or am i better off getting some milled out of mine to make it lighter? What is a good recomendation on valves that will last. I have had Ti Valves this long so i dont see a problem going with some oem replacements or another brand of the such but are kibble whites all they are made out to be for being stainless? I also plan on getting the head ported while i have it apart and am getting the valve job done will that be a factor in choosing my parts? Thanks for any tips or help you could provide in advance.