Your bed is made from steel, where the newer versions were cast iron. (strange as that may be)
I assume that you headstock had the tab filed down to match the tab needed for the narrow ways. This would of been very simple, as the heastock is cast alloy. As for the tailstock, that would be harder, can you take a photo of the bottom of it and I will have a better idea of what is going on there. There should be a tab under it with a 1.5" (I think) section removed where the cam lock clamp pad would set into it and lock it in place.
If they messed it up, you can replace the tab with a new one which has been bolted in place. This, however needs to be centered very good. The best bet would to have it all milled off flush and then a new piece of stock (slightly larger) would be bolted to the original block. Once it's bolted on, the tab can be milled to size and milled true in the process. It might cost you a bit unless you have access to a voc. school that would take it on, but then you have a wait. However, if you have a spare .... [
] Welding in s poor optionbecause it's castiron. You may be able to cheat a repair with JB weld, but it might now last as long. If you have 2, I would JB weld one for now (drill holes for the JB weld to fill into) and have a Voc. school fix the other one for good. (I will add more in a bit..)
The end of the tailstock should of had a threaded on end cap which is missing. The round block on there now is a shop fix. If you look at my photos in the lift block section, you will see that I removed mine and polised it. (One day it will be polished again and clear powdercoated.)
The bearings are easy enough. You need to measure the races inside the headstock and the shaft diameter and buy new bearings that match that. You will also need the width of the races for the new ones. I am going to be looking into this myself soon so feel free to e-mail me down the road to see. It would be an easy swap, the shaft has a larger diameter inside that the bearings would stop against and then the "float" inside the housing held in place by the bearing retainer caps on each end.
Here is the shaft with the original inner bearings on it.
{img]http://www.yankeetoys.org/lee/delta-13.jpg[/img]