Mark - i received the spacer today mate!!
Have just fitted the spacer to the hamster post and its a perfect fit!
With the spacer fitted i refitted the hamster and tightened the hamster post bolt and then tried to move the hamster itself...........
It doesn't move at all!!!
There is no tilt or movement from the hamster ball joint at all
Brilliantly simple idea - and it works a treat!!!
A very big thank you to Mark for making the spacer for me!
I'll try and put some pics up in a bit......