--- e1m4.ent
+++ e1m4@958e.ent
@@ -2143,12 +2143,13 @@
 {
 "classname" "func_door_secret"
 "angle" "0"
 "spawnflags" "1"
 "targetname" "t91"
 "model" "*53"
+"t_length" "73" // svdijk -- added to prevent z-fighting
 }
 {
 "classname" "func_button"
 "angle" "-2"
 "wait" "-1"
 "target" "t92"
@@ -2202,12 +2203,13 @@
 {
 "spawnflags" "3"
 "angle" "0"
 "classname" "func_door_secret"
 "targetname" "t91"
 "model" "*60"
+"t_length" "73" // svdijk -- added to prevent z-fighting
 }
 {
 "light" "150"
 "origin" "680 -256 1144"
 "classname" "light"
 }