Bonding - 3 channels , while 1 is slow

Hello ,
I have 2 units working in bonding mode 3X3 with 3 ADSL that work on low rate ~10MBps Upload&Downlaod
the problem is that 1 ADSL is very low , and because of it all the data rate is low between the 2 units
if I disable the problematic ADSL - then the rate is ~50MBps

my question is -
is there any way to know when I have problem in one of the salves of the bonding and then disable it?

Thanks ,