Looks like the FL820S and some others are getting replaced.
https://www.mustang6g.com/forums/at...I3TtDJKGoGy3FPrWWCB_ih-i_Tz4RRh4s82gRK-X_-UMg
https://www.mustang6g.com/forums/at...I3TtDJKGoGy3FPrWWCB_ih-i_Tz4RRh4s82gRK-X_-UMg