LOL....I can really understand what you are saying....my main machine in my garage is a 1932 Colchester Bantam lathe that I brought over from UK in 1981 when I emigrated to OZ...…..the bed had .013" wear down near the chuck end making saddle adjustment well nigh impossible, so I recut the 3 Vee's and 2 flats top and bottom on the bed with a hand planer device I made and scraped the saddle in to fit.....took about 3 weeks of evening work but now it works.

I'm still very new to CNC work, and have barely scratched the surface with my CNC mill, but it helps to keep the interest in engineering alive and at 80 I need lots of incentive to make anything now, but embracing new technology is a challenge and I intend to live forever.....LOL.
Ian.