No one is talking about what props they have....3,4,5 or 6 blades. I used to beat the crap out of my 42 when it had 525SC's with 3 blades on standard Bravos...never broke a drive in 4 seasons. Also I have noticed slack in some prop hubs. Slide hammer effect? If you keep popping the same drive it...
That thing is rough....Though its said not to be the first 37 OL, It looks like the one I know of. There must be 2 identical boats out there then. Walk away.