Correct me if I,m wrong but with LBA the sprag doesnt hold any force because the band holds instead,then in 2nd gear the sprag overruns(releases and freewheels).So with LBA the sprag only functions during the 1,2 shift overlap when the LB has to release to let 2nd work.So I'm thinking the LB isnt actually working to have that much failure of the sprag.