Yeah, seems low!
I apologize in advance if you have done some bonafide troubleshooting, but...
What do you mean by a couple of dead spots? What happens exactly, does the starter just spin and not move the engine? Or does it just click and can't move the engine?
If it just spins and does not move the engine, then it could be a weak Bendix solenoid and a new starter would remedy that. But that would not really fit your description. Now, the ring gear on the flywheel bolted to the engine may have some missing teeth in a couple of places, hence the "dead spot(s)" in your description. A new starter might help some since it will have a newer pinion gear, but that will wear out soon too as it finds those bad spots.
If it just clicks and cannot move the engine then you may have a hydrolock from water ingestion from exhaust manifolds or risers. If it just clicks be ready to take the plugs out one by one to see if any water comes out.