Front disc issues!

[snowy]

Not relating to the GTR, but  a classic GTR issue.
My other bike, cheep n cheerful - 1993 GSX750F, suffering break imbalance / wobble on the front.
Not sure of which disc, so set about cleaning / freeing bobbins just in case that was the issue, as mentioned for the GTR.
All freed up, lubed with a drop of GT85 (very carefully I may add!)one is very free (nay loose), test ride after still suffering the pulsing indicative of a warped disc.
Is there any repair / regrind of floating discs that exist?
Trouble is a new pair of discs is gonna cost nearly £300 for the pair......on a bike that's worth £500-600 
Any ideas or spare GSX600F / 750f front wheels out there?

[Toddy]

Worth checking your wheel bearings are ok first then invest in something like
http://www.ebay.co.uk/itm/Quality-0-10mm-Dial-Test-Indicator-DTI-Gauge-Magnetic-Base-Stand-Clock-Gauge/141324088660?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20141212152715%26meid%3Dfc32812b07e34b4d9c7d69d9949d1ac4%26pid%3D100338%26rk%3D2%26rkt%3D29%26mehot%3Dpp%26sd%3D221394427355

[Boomer]

http://www.ebay.co.uk/itm/Black-Front-Brake-Disc-Rotor-GSF-BANDIT-S-400-600-GSX-F-600-750-GSX400-Impulse-/171802429573?pt=LH_DefaultDomain_3&hash=item2800390885
£145 delivered

http://www.ebay.co.uk/itm/Front-Brake-Disc-Rotor-for-Suzuki-Katana-GSX600-750F-GSX400-Bandit-GSF-600-Black-/371323887339?pt=LH_DefaultDomain_3&hash=item5674a0deeb
£115 delivered.

I have these on my GTR1000 & GTR1400 and they are good.