i have a situation i would like some feedback. i have a 388 slingshot hustler with twin 525's, bravo xr sportmasters. i had drive showers installed and the starboard drive, which i never had a problem with, did not want to come out of forward gear. so i thought it was a shift cable. so i making my way back to the marina and all of a sudden the drive just goes. so i making home on one. we pull the boat out and the drive shower is hanging over the tie-bar, the finned cap off the top of the drive is missing, there is a chunk out of the prop blades. the holes for the drive cap and shower are not missing any threads,except for one hole, which had about 1/4" to 3/8" missing threads. the drive is trashed. the cotter pin and pivot pin is missing at the shifter linkage.
my thought is that the shower was not tightened down , without lock tite, the bolts vibrated loose, there was only about 8-10 hours on the boat since install, 3 bolts vibrated out and the 4th vibrated out so far and then the water caught the caps and ripped them out. i would think the shop that did the work would be reaponsible for the parts and labor. any thoughts or ideas of what happened. all would be helpful.