ok *** is the L shaped bit i found under my bash plate? i decdided to clean my bike a little bit (no it's true) behind one of the bash plates i found this bit. when the bike blew it's head gasket i actually stopped riding it because it started making a hollow noise as if the header pipe had fallen off - appears that it was this which is just above the header pipe and appears to be in a hole which is straight thru to the exhaust port. I can only guess that the block got hot (due to blown head gasket) and it then fell out? hopefully it will just push back in to place?