I had the perfect solution in my head, to resolve the problem of the secondary battery holder that was touching the final drive.
It involved dismounting - bending - drilling and of course some adjustments. The guy where Oleg took me looked at it. 
He came back with a crowbar, put it under the battery holder and bend it (with ease). That was it, in 10 seconds the job was done !
I am working on it, one day, i will be good !!! Thank you Oleg for your all your help in Yekaterinburg. I am leaving for Kazakstan.