diff --git a/src/resources/config-template.json b/src/resources/config-template.json
index dc24aba..bf1ea86 100644
--- a/src/resources/config-template.json
+++ b/src/resources/config-template.json
@@ -530,9 +530,9 @@
     "probe-xdim": {
       "type": "float",
       "unit": "mm",
-      "min": 0,
+      "min": -1000,
       "max": 1000,
-      "default": 125
+      "default": -125
     },
     "probe-ydim": {
       "type": "float",
diff --git a/src/resources/onefinity_defaults.json b/src/resources/onefinity_defaults.json
index 6a9eb4c..61c11e5 100644
--- a/src/resources/onefinity_defaults.json
+++ b/src/resources/onefinity_defaults.json
@@ -263,7 +263,7 @@
     "probe-slow-seek": 25,
     "probe-fast-seek": 75,
     "probe-zdim": 35,
-    "probe-xdim": 125
+    "probe-xdim": -125
   },
   "outputs": {
     "load-1": "disabled",