The wrB wont connect at tip range, after a GI this will normally be the case.I've never had the WR B followup be out of range. 3B won't launch usually but WR B has yet to fail me. What are his alternative combo options at that range off 44A? I have a feeling 66B should work.
You can still save the combo with a CE though. If you immedtiately do the CE, you will get 100 dmg instead of 72 because you still hit them "standing" for better scaling.
For meterless, you can use 66A+B and 66B for different ranges. 66A+B combos for 62 dmg when you are just slightly out of range for wrB and 66B is for everything else, the dmg is a little bit unmanly in comparison though (46 dmg). At absolute tip range only CE connects.