hi i have a 2.2 z22se in a coupe and it had blown the head gasket so we pulled the head off and sent it off to be reconed but found out it had a cracked head so the company found another reconed 2.2 so we put it on when we started the car it ran fine when cold but when it warms up its missing like a bag of spuds! the head has been back to the to the engineering shop 5 times and its still the same, i have done a dry & wet compression test and cylinder 2 is reading nothing the rest are on about 13 bar, has anyone got any ideas of what it could be?