Be careful not to tighten the bolts too tight as this will cause the valve cover to warp out of shape and you will never get a good seal.
I suggest you use a torque wrench and torque them up as per the specifications
If you dont have one handy just tighten them up as to where no brute force is needed....(hard to explain) in other words dont go overboard
Lets go find that Hotdog tree I planted
Lowered EF Futura
Black Steelies ( too cheap to buy proper mags )