I am tuning my FX Maverick Sniper in .25 and are running 155 on first reg and 130 on second reg and want to be able to shoot lighter (30/33 grains) slugs as well as FX Hybrid Slugs and JSB MK2. My problem is that I that I can not get the highest fps on power setting 7 - it is shooting faster at 5/6 and when that is happening my understanding is that I need to adjust the fine adjuster CV or I need to increase the 2 reg pressure. No matter how much i turn the fine adjuster CV the problem stay the same and now the fine adjuster screw is almost turned all the way in (1-2 mm) and I know I am doing something wrong here but can not figure out what to do. Anyone with suggestions?