Good hello, Steve. When we emc tested the previous version, we were able to drastically lower emissions by sticking a 0603 1nF ceramic between the 5V and 0V pads by the pinko. SL35 generates 3.3V for the board, so we're assuming that a similar cap between 3.3V and 0V will have a similar effect. Perhaps you could allow for these on next version? cheers, Chris