What do I do if my roller spindles are obsolete?Updated 9 months ago

If you have taken the measurements as shown in the image below and there are no matches with the items in the Roller Spindle Finder Table, it is highly likely that your roller spindles are obsolete and no longer made. 

The best solution at this point would be to update the mechanism with a new Garage Door Gear. 

Alternatively you could try to modify the door to work with roller spindles with similar measurements, but this should only be attempted by highly competent DIYers.