Hello! I'm having a super frustrating issue with my 12v square WS2811 pixel nodes, and I'm hopeful that someone can help. When running through an R-G-B-W-off sequence (or other sequences as well) when the command is OFF (after being on),*sometimes* *some* pixels stay on - usually Red. Usually one or two of the last 4 pixels on a 50 count. Details: I've tried 6 different strings, some in strings of 50, and others in strings of 100 with power injection at pixel 51. When a string of 50 usually 1 or 2 of the last 4 pixels. When a string of 100, usually 1 or 2 of pixels 46 - 50 and/or 96 - 100. Same pattern with a string of 150 as well. Using a 350 watt, 12V PS. J1Sys ECG-P2 controller powered from the same power supply as pixels. I've tried both universe outputs independently on the controller, both give same result. I've tried adjusting KBPS speeds in controller GUI, anywhere from 1500 to the default 3500. Test sequences performed from xLights and LOR Sequence Editor, both give same result. Multi-meter shows 12.6 VDC at beginning of string, 12.4 at end of string with no lights on, and 10.9 at end of string while all on White. I have less than 1' distance between the controller and pixel #1, so I'm positive it's not a lack-of-null-pixel issue. All lights respond 100% perfectly to ON color commands, just when off, some resort to red, *sometimes*. Which pixel stays on Red usually switches when continuously running the R-G-B-W-OFF routine as well; for example, all will go off, then next time #49 stays on Red, then next time #47 & #49 stay on red, then all off, then #48 on red, etc. The only thing I haven't tried is using a different controller... but this one has always served me well in the past. I can test a different controller in the future, but it will be a while until I'm able to easily do so, and was hoping to get a list of other troubleshooting ideas from you in the meantime. As always, thanks for your help!