Yup I broke my gears about a month ago. I ordered replacements from LMS.com. They came quickly and were no problem getting in. I had also broke the 2 speed gear and when I ordered the replacements I ordered 2 sets of each. LMS is very nice to deal with and their parts can be ordered for each brand of machine.
Good luck.
In case you have to replace the 2-speed gears on the inside of the unit, here are a couple of hints that I can remember from doing mine. If you only tore up the top gear you are lucky. If you can put the unit in slow and then high speed and turning the lower end of the spindle rotates the upper gear the 2-speed gears should be okay. If the upper gear only turns when in one or the other gear, you better tear it apart and check the 2-speed gear cluster.
Be sure to look for the little keepers on the shafts as they could be real bear-cats to try to find when putting things back together. I would wrap the motor in some cloth to protect the finish while you have it off, chipped the paint on mine in a couple spots. And don't forget to lube the heck out of all the mechanisms before you cover everything up. You may appreciate the help of a friend while taking it apart and putting the unit back on the column again, it is quite heavy. I had time to put together a little hoist to help me.
It may be handy to cover the top of the column to prevent anything from falling down inside it, don't ask me how I know. And if you have to replace the 2 speed gear on the inside I removed the 4 bolts from the back side of the column side of the unit so as to be able to get at the high-low speed selector shaft set screw. Be very careful to set this selector correctly when re-installing it. (Mine hit the back of the electrical box before the selector was centered on the gears.)
NodakGary