Tony
I was in the same place as you at one time. I had a son who would have done the job in no time at all. He was actually a degree qualified race engineer. Unfortunately I lost him four years ago, when he took his own life and left two sons behind. He was twenty eight years of age, I am 72 and nowhere near as agile as I once was. Just to add to the problems my wife died in March of this year. Enough about my demise.
Yes, I do care very much about being road legal and RING Xenon 200 are guaranteed as road legal bulbs. No, I do not fancy putting the lamps in the oven at all. In fact I do not fancy doing the job at all.
I have wondered about buying a second hand pair of lights but was concerned that I would end up, as you unfortunately did, with another pair that had broken.
Thanks for the advice that bumper has to be removed.
Best Wishes and Regards, John