[OXO cube]

hi guys 
having purchased the afx jaguar challenge HO set 
i thought i would service the cars before i ran them 
being new to HO i wasn't a careful as i should have been 
and when one of the pickup / brush / ski thingies fell off , the spring underneath went walk about also 
found the blade thing , but the spring has pinged away , i cannot find 

my question is :-
where can i buy spares for these cars ?
apparently AFX Turbo chassis 

also thought i would check if the lights worked on one of the cars 
i now know they are 6v , since the 12v tester i used blew the little light board inside the car body 
just gotta love learning new lessons   

kev