I have just viewed 19 mins and 45 secs of excellent footage which was concise and informative and at the same time emphasize the dangers of radium and to steer well clear of damaging putty which was the main reason mine needing to be serviced. Attached are before and after photos of my G150, note also the size of the bubble, Many thanks to Paul of "Trademark London", for a job well done
Attachment 24418