im just about to put my cossie head back on in the next couple of days but am a bit confused about something......on reading manuals, the notch on the block should be lined up with the crank pulley notch and not the 16 deg btdc grooves on the pulley....is this correct as mine was running before lined up with the 16 deg btdc marks and ran fine. Is there any reason why it would have been lined up incorrectly and should it have ran well like this?????????