ORIGINAL: ChuckN
Otherwise it wouldn't be too hard to make a new cam if you have the right machinery available. You would need a cam grinder and a gear hobber. Also, you would need to understand heat treating so as to surface harden the lobes before they are finish ground. There are lots of machine shops that are capable of doing this kind of work but the problem is finding someone that will do it for cheap.
It is a place for model engineer who can make cams and gearwheel..
ORIGINAL: mediaman I should be more especific. The engine is a Magnum four stroke, you can tell the overlap on a Magnum is not as aggresive as on a Saito, or YS.
It is true, these standard 4 stroke modelengines are more agressive than than full size automobile engines.
In full size automobiles has not big overlap, valve timing cause law about emission, pollution etc..
Why trimming standard 4 stroke modelengine when you can buy a new Saito, YS engine in local dealer.
Jens Eirik