Finally some time spent and parts acquired
starting Hacking the lower hull around to get my idea of using a Kv 1 chassis well the arms and wheels
from this

to this
next job completely dremel out an old KV1 chassis and cut it to size so the arms line up
Hmmm Wheels these arent much cop

sooooo grab the old Abrams wheels hmmmm razor saw
cut out the silly abrams wheels and make the kv wheels sit nice and snug inside
this is what i have now spacing correct and the inner hub runs lovely on the kv arms