I have an old Schwinn with Maillard hubs. The rear hub has a 6 cog freewheel and the hub is 126mm spacing. The axle is slightly bent and I would like to replace it. The hub has a 2 interlocking circles logo and the number 88 stamped in it (year of manufacture?). Are the axles still available without buying a complete hub and relacing the wheel. I really don't want to relace the wheel.