Sentinel Beam & Fuel Rod Gun not in Halo 3 Customs

I recently made a forge map with a sentinel beam and fuel rod gun, with both weapons set to spawn at the start of the match with symmetry set to both. However, when I try to play that map in Halo 3 custom games (default slayer with weapons on map set to “map default”), these two weapons won’t appear. I also tested this with the 7-wood on Sandbox, and the same thing happens. The weapon spawns themselves still seem to work if you select a different weapons-on-map option such as random, but as far as i can tell, there is no way to get a Sentinel Beam, Fuel Rod Gun, or 7-Wood to spawn. Does anyone know of a way to fix this?

Add another item to the list of things in Halo 3 Forge that are completely broken…