If you have the original washer for the derailleur with the stop for the grub screw, you can use a generic band on adapter with a curved plate, like the m:part, just not ones with a flat back
Cheers for that. I guess I'm not going to get anything to them now quicker than they'll get the SRAM one. They said they were ordering it on Thursday but apparently it still wasn't there today.
If you have the original washer for the derailleur with the stop for the grub screw, you can use a generic band on adapter with a curved plate, like the m:part, just not ones with a flat back