--- a/mozilla-tests/production_config.py
+++ b/mozilla-tests/production_config.py
@@ -18,18 +18,20 @@ SLAVES = {
 }
 
 for i in range(1, 123):  # XP slaves from 123 onwards moved to Win7 and Win8 pools // Bug 1226729 // Bug 1239785 // Bug 1255812
     SLAVES['xp_ix']['t-xp32-ix-%03i' % i] = {}
 
 for i in range(1, 282):   # Move some XP test machines to the Windows 7 pool from 234 to 253 // Bug 1226729 // Bug 1239785 // Bug 1252258
     SLAVES['win7_ix']['t-w732-ix-%03i' % i] = {}
 
+for i in range(1, 600):
+    SLAVES['win7_vm']['t-w732-spot-%03i' % i] = {}
+
 for i in range(1, 100):
-    SLAVES['win7_vm']['t-w732-spot-%03i' % i] = {}
     SLAVES['win7_vm_gfx']['g-w732-spot-%03i' % i] = {}
 
 for i in range(1, 102) + range(103, 205):  # Omit 102 for win10 // Bug 1191481 // Bug 1255812
     SLAVES['win8']['t-w864-ix-%03i' % i] = {}
 
 for i in range(1, 3) + range(11, 12):  # Bug 1252258
     SLAVES['win10']['t-w1064-ix-%04i' % i] = {}
 for i in range(102, 103):  # Use win8's 102 for win10 // Bug 1191481