Bulletproofing your Columbia Overdrive Unit

To give you a little more information, Bulletproofing is:

1. Machining the A-24 Assembly to allow for inserting of a special tubular steel band to strengthen the assembly, then re-machining it to size. The original castings need to be reinforced and "banded", as they had a tendency to start cracking in the machined groove where the A-30 cross sits and fits. See the photo below.
   
2. Machining the A-30 Cross to allow it to now fit back inside the banded A-24.
   
3. Welding the A-17 Assembly and welding the inside legs of the A-17 "basket" to strengthen the assembly, then checking the other welds. If the A-17 is broken, the overdrive will not work. It should be noted that I have been able to repair and save some of the damaged units -- depends on how badly they are damaged. Call me for more information.