Took out the Delta Wolf today for the first time in a long while. I was previously shooting 25.39 JSB RD and figured I would change things up and run some 15gr Hades. I programed for the Hades at 880fps. Gun was showing I should be at 140bar but I always set my pressure under the gun recommended pressure. My reg pressure was at 120bar. Took my first shot 1040fps. Second at 1020fps . Dumped 2 mags and gun never went under 990fps. I changed my settings in the program to a different speed and nothing. I went up to 18gr and set it for 880 fps. It took almost 2 mags to get to that speed with 18gr jsb's. Went back down to 15gr setting at 880fps and again nothing under 990fps. I brought the gun in and did a software update. Took the gun back out and removed the bottle. Dropped the reg to 100bar. Tested the gun again at 880fps setting with 15gr and wouldn't drop under mid 900"s??? Not sure if anyone has had a similar issue. I forgot, also had cleaned the barrel and the clear cover for the chrono! What do you guys think???