Thanks for this mod, it's saving me a lot of chunk counting.
When I place a radar, I delete the marker. I noticed that many were reappearing, and I eventually worked out that it happens when a Spidertron enters the chunk, or if I delete the marker while the Spidertron is in the chunk, it reappears as soon as the Spidertron moves. I suspect this is because the chunk is "re-charted" at that point. Could you keep track of planned radar markers you place and not re-place them ever?
