Just make sure your vents (both of 'em) are clean and working. On my gold bike the vents got plugged up and that sucker started spewing oil everywhere (cam tower buttons, valve cover gasket, cylinder base, etc). I thought I'd totally blown a headgasket on the way back from the WHCM. Turned out that it was the new oil-tank dipstick I bought at the WHCM and put on it. The vents were accidentally plugged to each other (wrong end of the hose) and when I put a new dipstick on it with a good gasket it plugged the whole system shut and oil flew. But, if it's all working right there is no pressure inside the engine.