The increased pressure required by the level 10 causes the pressure on the on/off pin to also increase. There isn’t much “extra” force available in the hyperframe solenoid. It’s running on the edge. The larger springs require more pressure, hence they don’t always work. Since every frame is different and every valve is different, some work better than others.
But, to answer your question, yes, going to a shorted spring will likely reduce chuffing. When “tuning” the level 10 you should start turning up the velocity until it just fires. Chrono it. You need to be at least 20 fps lower than your target velocity. This is to allow for changes. If you are already at your target velocity it will not fire if you have to turn it down at all. If the regulated pressure drops at all, for any reason, it will not fire. Hope that makes sense. I believe this is covered in the level 10 installation instructions.