I am trying to identify what prop I already have on Yamaha 90 2s, I feel the boat is not reaching its peak performance, feels like Im not getting a very good top end speed, seems in the low 30s at most, and the holeshot seems fairly sluggish sometimes as well as the grab in turns. Some of it is due to having old Bennett trim tabs and them giving me problems and breaking sometimes, and these boats really need to run with tabs always to run efficiently. I am mainly in super skinny water, and want the best performance for that, but also get caught in heavy seas sometimes. I haven't had a gauge that worked in awhile to give rpm numbers, that would help someone diagnose it, and tell me where I should be at. The person that had the boat before me said it was propped out good. But I figured I would start with trying to figure out what I have first, then go from there and see if I'm in the right realm with what is usually recommended for this set up. I have a 1993 Maverick Mirage HP with a 96 motor that runs awesome, just think its not getting the power down to the water! The only identifying numbers on the prop are 19-K and B38, stamped into the 3 blade prop. I was wondering if anyone would know what that means exactly, or the maker of it or any info. I have never thought about props until now, and know this could be a whole new monster! But want to learn a little more as I know more of what type of conditions I am in on the regular and what I might need. Thanks for any info!