I have 8 hdpe arches with the controllers sitting between 2 and 3 and 6 and 7 so the cable runs to those arches is about 1 ft. The runs to 1 and 4 and 5 and 8 are about 7 ft. No problem last year but this year arches 5 and 8 keeping locking up on all white and even stay on at end of sequence. Have to kill power to them for a second and then then work fine for about 5 to 10 minutes then lock up again. Thought it might be the lights but changing arches keeps the problem at 5 and 8. Now I'm thinking the run is too long although 1 and 4 are fine with the 7 ft runs. Anyone familiar with this problem?