My left turn signal won't flash if the engine is off or idling. I noticed if I am riding around if will actually blink a bit slower than normal, then go back to a solid light at idle. Physically hitting the relay will actually cause it to go through a "blink cycle". I've tried new (oem) flasher relays and new blinkers, nothing changes there. I am running stock front flashers and an integrated (led) brake + turn signal in the rear. I haven't had any issues before. What could I try?