Redid timing chain guides

[Thee 240sx Owner]

And man it was a pita like always.. took 12hrs to do.. right guide... (straight side) was shredded all the way to the bare metal to where it was engraving the metal with the chain.. and tensioner side... (left side) was still intact but the chain managed to come off center from the guide meaning it started at the bottom in the center but when it got to the top.. it was off the guide by then... .. but after i got everything back together... it seems as though some of the pieces from the old chain guide has gotten lodged in the canals of the oil pathways that bring oil up to the head to lube the cam and the rocker arms.. anyone know anyway of fixing this problem.. i was told to take a compressor and blow air back down through the canals to clear out any debris.. but the problem is I don't know where the oil squirters are to do this... i would appreciate it if someone would tell me where i can find out for i have no car untill i get this fixed