diff --git a/printer_data/config/printer.cfg b/printer_data/config/printer.cfg
index 8b45902..f237727 100644
--- a/printer_data/config/printer.cfg
+++ b/printer_data/config/printer.cfg
@@ -272,11 +272,13 @@ zero_reference_position: 125, 125 # center of your bed
 speed: 400
 horizontal_move_z: 5
 # These are physical Cartographer probe coordinates. With y_offset: 25 the
-# nozzle travels through Y=5..220 while the probe covers Y=30..245. X=5..245
-# keeps both nozzle and probe inside the plate. The rear brush is at nozzle
-# Y=250.5, well outside the scan path.
-mesh_min: 5, 30
-mesh_max: 245, 245
+# nozzle travels through Y=5..210 while the probe covers Y=30..235. The coil
+# reads the plate edge as falsely low: on 2026-10-04 the Y=242.45 row measured
+# -0.6..-0.8 mm while Y=235 was flat, so keep 15 mm from the 250 mm plate edges.
+# Outside this area Klipper holds the nearest edge value. The rear brush is at
+# nozzle Y=250.5, well outside the scan path.
+mesh_min: 15, 30
+mesh_max: 235, 235
 probe_count: 30,30
 algorithm: bicubic
 adaptive_margin: 5