Venom advertises the p-1 mono with a 40mm plastic prop. Their website sells a 40mm plastic prop for the p-1. But when I got mine, it came with 2-36mm plastic props from the c-1 cat. E-mailed Jason @ venom and he tells me the 36mm is the right prop and the extreme cavitation from the start is normal. I think this is a bunch of I just was wondering if anyone else got the right prop. I'm thinking they didn't have the right props so they threw in the 36mm props just to get the boats shipped out in a hurry.