hey guys i just wanna ask what happen to my cars
recently i regind the cam ( stock cam ) my echanic say it was 1mm only but since now i have this leaking problem
. i can c the engine oil leak from

1.rocker cover
2.oil sump
3.timing ol seal

all this thing i change twice, but still the same problem happen .. what happen actually.. thanks guys

A reground cam or any cam cannot cause these leaks.

Perhaps it is a malfunction block ventilation. The rocker cover hose is supposed to go to the air cleaner, the block breather tube to the PCV valve. If both of these are plugged, pressure builds in the engine and oil leaks out in various places.

Or it could be that the rocker cover was overtightened and so leaking, running down the engine and making it looks as if there are severl leaks. I would start by removeing the rocker cover, and ensure the gasket is flat, especialy where the bolt holes are. Do not tighten it very tight!