Shad SH38X Expandable Panniers - Carbon Finish

I bought these over a year ago now and have used them on 3 trips (Alps, Scotland and Wales) and at first I really liked them (my positive comments were originally included in the Bennett's BikeSocial review online) but I've had non-stop issues with the locking mechanisms. The springs that push out the angled pegs that hold the handle down constantly jam and this brings me to the very poor design. The lock doesn't lock the actual cases! The handle once closed blocks the case open release and the pegs hold the handle down. If the handle is up and you lock the case, you can still open it! All the lock does is locks the pegs and the push down button to retract them, in place. So if you ever forget to lower the handles, the pegs stick (as with mine) or even if you are just carrying the cases, they are NOT locked!
My cases have been returned under warranty so hopefully they are either fixed or replaced but that won't change the awful lock design and poor security.
I welcome feedback from SBS or Shad regarding the locks.

Bought to keep my bike width at the back the same as the handlebar width, but with the convenience of expanding storage when needed. The usual excellent SHAD build quality. Recommended.