This latest niggle has me perplexed…my Tenni’s original headlight was a bit rusty and reflector scratched. Pilot light and high beam fine but low beam was not lighting. Replaced bulb - no low beam. New headlight arrived - no low beam. Checking left handlebar switch block as possible culprit, the horn button, indicators, passing switch all working. Flicking the light switch, position 1 pilot light fine, position 2 high beam only. Could the problem be the red high/low beam button? And her