Norman,
Depending on your success with JG …
1) – The windscreen frame of a Light 15 is part no. 221217 which appears to be the same as that of a pre-’52 Légère so I do not believe you will have too much difficulty in locating one if you need to. I have contacts in France for second hand bits if required.
2) – I can confirm I do have a UK contact capable of “scumbling” should you need it.
B…………
Bernie