Mikael advertised just now that he has repro 101 brakedrums available! That is something that hasn't been available for a long time!   Here is his shop.

http://www.antiquebike.se/en/about-us.htm

In India there is another source for brake drums. He is also making repro tanks for our 101 and perhaps other parts. Parvinder Singh can be contacted via Facebook.

https://www.facebook.com/amiimpex

https://www.facebook.com/groups/ILoveMyIndianMotorcycle/permalink/508950619260165/