Morris Commercial LC5 Parts needed

Does anyone have a source for a set new timing sprockets and chain for the 2.2 l petrol engine?
Or a solution to eliminate the racket from worn timing chain and sprockets at low revs?
Thanks for any help

Through a post on Morris Commercial Club (UK) I got good advice from Morriecommkiwi:
A rubber tensioner ring is available from BASIS NZ.
The part (part number: 8G528) is the same as for a Healey 100-4 apparently, and a chain for that is available on eBay from the US. Not sure though if the chain is the same for both as well. A new chain tendsioner ring should go a long way towards solving this problem