08-04-14, 07:23 PM
Were the plugs in or out when you lost the dowel ? If in it may have gone down the cam chain tunnel, shine a torch down there might see it.......taking the sump off is easy, might have fallen to the bottom.......if plugs out , if it were me I would take the head off again to make sure, you hav'nt started it so gasket should be ok........done a simular thing with a valve shim....fell in slow-mo down the plug hole, only way to get it out was to take the head off.......good luck.hope you find the bugger on the garage floor somewhere 
One, is never going to be enough.....