chainring offset of Bafang BBS02

Due to the thickness of the motor, using a straight chainring results in an offset of 10 mm in the chainline. The 42 T chainring provides an offset of 9mm which should be ok, but this is too muck for a MTB use. Currently I installed a 36 T with a small offset and I had to disable my largest gear.
My question is does it exist a chainring for BBS02 with 36 or 38 teeth and an offset of 9-10 mm, knowing that it must cover the motor which has a diameter of 125 mm.
Thanking you
Dimitry France

Here you go! https://electricbike-blog.com/2017/02/13/but-this-chainring-was-just-right-goldilocks-and-the-36t-lekkie-bbshd-bling-ring/

PreciAlps in France offers a comparably good solution for special chainrings with offset and the Bafang bolt circle.
http://precialps.com/uk/20-accessories-bafang-bbs01-bbs02

I had email contact with Bertrand from PreciAlps a week ago.
His answer:
The chainring 42 teeth is offset by 10.5mm below 42 teeth we can not have any offset.
I advise you a chainring 42 teeth which will allow a good line of chain, you have a cassette 46 teeth which will allow you to make a good climb with the important couple of Bafang.
Thank and best regards!
Bertrand

+1 keeping front 42T and increasing rear cog size.
I have a bbs02 coupled with a shimano alfine 8. Using 23T rear cog and the stock 44T chainring, I can crawl up any slope, even with a loaded trailer. Won't be fast though.
Also, by turning the cog outwards you can reach a near perfect chainline. I think IGH are the best solution to chainline issues on bbs01-02, though if you use the 02, be careful not to change gears under load otherwise you'll end up breaking the prawls.