FYI, if anyone breaks the 1/4 turn tabs on their Wahoo or Garmin, Wahoo customer service directed me to this little company out of Utah:
https://www.dogearsgps.com/
They make a nice little aluminum bracket that replaces the plastic mounts. You finish breaking off the original plastic tabs, sand the edges smooth, then glue and screw on the new metal bracket. I just ordered one, was $33 with shipping.