Someone who’s got a a very good case of CAD got this...I’m jealous whoever got this
My dads 044 serial 128xxxxx is 10mm and had the same filter as above. We swapped to the hd2. I can’t tell much difference in performance. We added a factory dual port cover. Nice sawsSerial is 120xxxxxx well before 12mm. I’ve had quite a few 10mm 044s and they all had HD filter setups. The 064s I’ve had have not, might be a regional thing.