leak down test will not tell you anything about the condition of the camshaft...it only tells you how the engine is sealed....leaking either from the rings or valves....
take the valve covers off...and slowly turn the engine over...watch the action of the valves....or turn engine over 90 degree at a time on the crankshaft according to the firing order...then check the rocker to valve relationship ..look for excessive clearance between the rocker and tip of valve.....
