Need help on finding arcade steering wheel torsion spring for Final Lap cabinet

[erichartman78]

This is my first time posting...  I've been unable to find a replacement torsion spring to get the return-to-center steering working on the left-hand-side of my Final Lap dual-sit-down MAME cabinet.  Does anyone know of a place where I might be able to find a torsion spring that might work?  Without it, the steering is a little clumsy.  Been looking on ebay periodically, but haven't found one. 

p.s.  The conversion I did to the Final Lap cabinet was inspired by Gozer5454's GrandPrix Star to Xbox masterpiece.  Dual, system-linked, modded Xbox consoles with large hard disks running XBMC, madcatz MC2 controller boards interfaced to the original arcade Final Lap steering and pedals, pair of 22" LCD HD TVs, center console constructed from X-Arcade buttons and sticks to allow for all Xbox buttons to be available.