Steve H, I noticed you said you have a large filter. I recently got a 55.1, 235, with a very large Canister. It’s about 8.5 inches on the side down to the funnel and 5 inch OD. I ended up getting a ”junior” element because I figured all P-115s would be the same. The junior P-115 is significantly shorter and a little bigger in OD. Anyway my question is what is the correct filter element and where do you get them? Thanks.