hey

i'm building up my dads old racing bike into a fixie, the frame spacing is 125mm however i bought a second hand track wheelset for it in order to keep down the cost of having one built for me. When i put the rear wheel in the chainline is well off. Could anyone help out with advice? Im guessing its becuase the wheels were built for a track frame with smaller spacing?

Will the wheels be compatible? is it a case of getting the right crank/bottom bracket combo to get the chainline straight? or are they just totally incompatible?

Any help greatly appreciated, cheers

Dave