FURTHER UPDATE, started leaking again. Bought a new volute thinking the fitting on the volute may be the problem. Installed and still leaks, so with a new volute, and a new line fitting, I am a at a complete loss. I did notice just tilting the pump slightly can cause it to leak. This means the fitting must be completely level and flush, but again this is almost impossible to do. I am going to try and find a better o-ring to see if this helps otherwise I will just go buy a new Polaris pump as I never had this issue with them.