Just got to work with the bike, 45mins ride. When I left home, blinkers were at normal speed, half way through, left side started flashing fast again. I guess it's intermittent. Also, the high beam blue indicator comes on, it just too faint to see in daylight, this morning it was still dark and I could see it. I must review my wiring I guess.

Cool, something easy to check on, you're right, could be the contact between socket and bulb. The rear signals are brand new, I'll check the front. Actually come to think of it, I'll swap the left and right bulbs and see if I can reproduce the problem that way.