Hi, I know its been a while since this post.
I wanted to know if you remember what it looked like in the new filter housing, if they had made a dam, in frt of the oil pressure in port, so the oil pressure coming in did not blast right at the filter paper.
I would wager that is what happened, because the valve/stand pipe in the middle would not have prevented the filter paper tearing. That had to have happened due to the over-pressure problem these motors have in below freezing weather.
Just curious if you had any pictures inside the housing.
Thanks
Bob