Thanks bros; Me & my Mechanic has done the required stuff.
we just opened the flat-steel plate connected to provide flexibility, and just changed its thread to new position.
Now, with Light Pipe Frame even, tyres are @ 90degree, and hopefully they will only change on bumps, because with two person, they are straight. I will test them with speed and load, when arrived at starting point, hopefully day aftertomorrow.
I will post the pics in my next post.