Last time I did any hand mapping was about 10 years ago playing EOTB on the Amiga. Previously about 14 years ago we had the luxury of three of us playing DM and CSB on the ST as a team - one controlling, one mapping, one helping (switch roles every hour or so).
Whilst time-consuming, mapping can be quite satisfying when it all comes together, though really annoying when you have to sellotape on extra bits of graph paper for small sections that won't quite fit.
Anyway, I'm doing the dunge but it will take me several weeks as I don't have a lot of spare time for games - a common trait amongst us old farts

P.S. Is it possible to make CSB4Win open with your favoured size and speed settings, either using the config file or runtime parameters?