I imagine that it's not that challenging for KF to re-spec parts to the right size. I'm sure there is some added cost but they could dramatically improve their kit if they did that. I hope they do that one day. I also wish that there was a disclaimer before you bought one that said: "WARNING: NOTHING IN THIS KIT IS THE RIGHT SIZE! YOU WILL SPEND MANY FRUSTRATING HOURS OF YOUR DAY SANDING AND REAMING."
At this point I wish I had a mill!