Sometimes my front left indicator flashes really fast and sometimes at the normal speed. When it flashes really fast the left rear indicator doesn't work. This happens about 50% of the time I indicate left. I have also noticed that sometimes when I indicate left when approaching a corner the front indicator flashes really fast but then when i roll all the way off the throttle it starts flashing at the correct speed and the rear indicator then kicks in also. But other to that I can't see any patten to why it sometimes works and other times doesn't. Any suggestions please????