Fuel tanks are too hard to destroy

[SickSidewinder9]

Fuel tanks seem way stronger than 1 would expend them to be.  Like 1 500 pounder should set 1 off and start a chain reaction that blows all the nearby ones up.  Right now 500 pounder on a delay makes a scratch.  Really messing up a campaign I'm trying.  Not sure if it's an ED object or something particular to Syria.  Pretty weird and frustrating.

[Exorcet]

There is an easy workaround. You can use triggers to cause explosions, so even if the fuel tank fails to go off, you can force it with just a single bomb.

[SickSidewinder9]

OK, great, but this is for a campaign I've been playing, not my mission.  And I would have to look up how to do that to edit it.  Anyway, are they ED objects or custom to Syria?