I had issues with mine, the first time I rode at night, I came out of street lights to dark and had to stop, all I had was a small V of light to see by, I rode home on high beam slowly. I replaced bulbs with halfords extra bright ones, I put spacers in to make the filaments further back in headlight which seems to hit more of the reflectors giving a better spread of light. I then did the connect the redundant side of the 2 filamentb bulb to the unused dip beam connection in the box under tank via a switch so there's no issues for mot, this has worked great for very little money. It is worth moving the bulbs back and forward in the headlight to see where the best position is to give the best spread of light, just a couple of mm makes a big difference. I wonder if the bulbs the lights were originally designed for are shorter than we can get here.
