Make sure you check your tail pipes as well. Mine were cracked and getting new top end right now.

Still watch them. That's how they start to go. How many hours on the motors?

350 or a little more...but a good 280 of them were in salt...

Yikes. I popped mine at 180, 200 and 220 hours. If you see any abnormal steam or feel any hesitation getting on plane - pressure test those bad boys.