Once upon a time there was a forum member called 8-valves of fury that sold me a pump and it was leak free, until I over tightened the timing belt and destroyed the pump main seal. I got lucky, I put a new front shaft seal on and had no more leaks for over 100,000 miles. I made sure I put plenty of vasoline behind the seal before I installed it. Been running it for over 3 years now. Slap a new seal on the front and see what happens. But make abolutely sure the timing belt is tensioned correctly using the vw or equivalent tension gauge