Hello everyone here goes my fird post! I have a early build 99 MKIV golf manual trans that has a leaking injection pump. It's coming from the 26mm triangular bolt. It's the one in the middle of the cast iron body in between the injector lines. The leak is about a drip every 3-4 seconds. Only dose it when the engine is cold. My parts diagram shows a ln O-ring that seals this part. If I remove this large triangular bolt to reseal will I change the piston calibration or damage anything? Doesn't look really complicated in there just haven't cracked one of these open yet. I have the special socket set and complete gasket kit coming and already have a VCDS. Just looking for some insight before I tackle this job. Thanks in advance everyone! Love this forum.