Hi Reggie. Thanks for your reply.
BT27722001 seems to be an AJP 2 piston caliper and seems to have been fitted to the TXT. Mine is a TX and has a4 piston Hebo fitted. Do you happen to know if they are interchangeable?
I contacted him Snell however the replacement BT27922001/1 is also currently out of stock and it's expensive, between taxes and shipping it's a 3rd of what I gave for the bike.