I have a Wadkin BRA, superb machine that’s ‘perfectly’ accurate.
The only things I’m aware of that need to be checked on these saws are
1. There is a hex head in the end of the spindle that often is rounded out making blade change a little more tricky.
2. The carriage on the arm slides on 4 special bearing rollers. If these are worn, I’m not aware you can get replacements and would been to be made. They determine the accuracy of the slide.
3. The motor has bearings that need to be greased. Often it’s a job that occurred in the factory and never since. Verify the shaft of the motor isn’t worn. It’s a special motor with a flattened bottom.
Other than that they are just about bomb proof. Download the manual off Daltons web site to follow the simple setup procedure which I’ve only had to do once and your good to go.