First off, I'm using a Helix LT ver 3.50 and HX Edit ver 3.51 under MacOS High Sierra 10.13.6. I created a preset with four Snapshots (SS) and four effects. The preset works exactly as I created it - no issues. I Copied and Pasted the preset into an empty preset to make some minor changes to my Volume/Gain block. While using the copied preset, SS 1 sounds and works correctly. The volume levels on Snapshots 2, 3, and 4 are very low (less than 50% of SS 1) and are somewhat distorted (they should be clean). The strange thing is when I switch to back SS 1, the volume drops and it is also distorted. I went through the copied preset block by block, and the settings looks the same. I tried Exporting and Importing the original preset with the same results. Tried shutting down HX and rebooting my computer with the same results. I can't figure this out. I've had my HX for about four years now and have never encountered this. Any help is appreciated.