Updates. After finding this thread I sent Wallke a link & asked if they had run out of direct drive, regen capable motors and because of that, swapped ours for geared, non-regen capable motors instead. This is their response:
"Hello,
I greatly appreciate your reply as I understand your feeling. It means so much for us when our customer share their feeling with us.
The information from the our production department states the regeneration function is detrimental to the health of the battery and controller.
Our engineers are fixing this problem.
If you insist on activating this function, I will apply for one motor for you. The new motor will come with the regeneration function. But make sure you already know this function may shorten the battery and controller life.
The controller allows for the use of motors that have the capability, but the geared rear hub motor on the bike doesn't support it. The real world reports indicate the amount of regeneration is pretty low (some estimates are 5%). If the bike had regeneration, I'd turn it off. This is because regeneration drains momentum from the bike so it can charge the battery. The bike is actually braking when regenerating, so you lose momentum that would otherwise be there for coasting. Due to the inefficiencies inherent in the cycle of regeneration, power storage and them re-powering the motor, you can't get back as much energy as you lose. You get less usable range extension than you lose from braking instead of coasting. Basically, you shorten the range of the bike.
Sincerely,
Wolf
wallkeebike.com
Sent from my iPhone"
So it sounds like they may be willing to ship us replacement motors which once installed, should fix our issues. My question is... who is going to pay for/do the installation of the replacement parts? I'm new to ebikes so I'm not really confident changing out motors myself, and I don't even know if my local ebike shop will work on Wallke's, let alone how much something like that would cost. Not sure if I should accept a new motor and go through the headache of getting it swapped, or if I should stick to my guns and insist on a full return. What do you guys think?