Sjefke you will get a kick out of what I used for his biceps and elbow joint, that is actually ahsokas legs attached to hammer heads arms
Pretty cool huh 
Only brilliant.
You integrated that knee beautifully.
BTW. Brilliant minds think alike, Bud.
I loaded up on those brain worm Ahsokas when they hit the discount retailers too. Those are the best, tiniest ball joints out there.