I’ve owned a .25 cal Impact since 2015. I have become very familiar with pcp airguns and how to maintain them. This particular example seems to need all orings replaced about yearly. I am not running abnormally high reg preasures (143.4 bar seems to be the sweet spot for this particular gun when firing the JSB King 33.95 Exact King Heavy Diablo mark 1). I have had to replace orings often enough that I recently purchased one of the high end Wika gauges (DG-10) so that I could do the whole oring replacement job and get things dialed back in quicker. AoA did the first and second rebuilds then I started doing them and just finished the 4th two weeks ago. Even when the gun was new and after the AoA rebuilds the gun would leak down from 250 bar to 50 bar in about a month. This is still the case today. I also have an FX Revolution that holds pressure indefinitely. So the leak down of the Impact is concerning but maybe not unusual given the vast number of orings in play. What are others seeing for this gun?