I found an old thread on here with a dead link (https://elightbars.org/forums/threads/new-project-syncing-2-whelen-slimlighters.27357/) that mentioned this, but has anyone ever synced slimisers? I have 2 TIR6 that I just got, red/red. I wired them together to power source, then turn 'em on (set for same pattern). It starts out synced, then drifts. Anyone know why? I imagine it's some sort of difference in current getting to the two flashers, but...not sure. Halp?