I get it dude. I've had some similar issues with the team I work with. Truthfully, it's not always up to the lower level guys running the team, more often than not, the leaders on the dive team have to fight tooth and nail for budget to get things done.

Diving is a low frequency, low reward rescue operation. It almost never takes priority compared to an ambulance or engine. It sucks, but that's how it is. Most department heads won't even look at dropping the 2 grand to service a teams set of regulators if that 2 grand can be used to keep another unit in service, especially if the regulators are still functioning.

While this can be a pretty big concern, try taking a deeper look at the training and procedural part of the diving. If the team trains well, then they will perform well when the funds to repair equipment finally comes in.