Dear
My problem is next :
rear wheel driving, going left to right
means not stable
occasionally gets carried away to the side
and it is hard to keep straight
means,
It is a rear wheel
When I removed the wheel
I noticed that happens next
see video
and pictures
My English is bad
but I hope you understand me and help
thank you

 

I think the problem with rear wheel spacers
because there is too much space between the axles and rear wheel spacers

look at the video, is it normal to have such a space??