hey guys. I am finishing up a head gasket job on a 88 300e. I put the head on and tightened down the studs to 40.59 ft lbs. I have not done the first 90 deg and the second 90 deg. I remember when I pulled the head and took out the old gasket, there was a dowel pin of sorts stuck in the gasket. I know there are two dowel pins for locating the head on the block. those were still there when I put the head on. this looks like a dowel pin but has a slit down the side. I have no idea where this sucker came from? any ideas? I would reeeeeeeeally hate to pull the head back out but if it has to be done then so be it. I just wish I knew where this thing came from. there is no mention of it in the online repair manual.

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88 300e
92 mr2