I'm just getting started on automating my lights, but I've found that the long 250 led strings aren't working the way I'd expect. the majority of the lights are only very dimly lit, and the end sections are bright. the strings don't have any breaks, and work fine on the original psu. my new PSU is rated for 500W, 24V DC, which should be able to supply the current needed, but the lights are only drawing 4mA, as opposed to the 36mA from the original supply. this current issue is the same direct from the supply or through the dmx. so how can I force the lights to draw more current? or am I missing something?