Johnnybass.. If you will get with Mark Croxton he can re-pitch your 28 Bravo XS to a “true” 27P.. Key word being “true”.. As you already know a stock 27 Bravo XS is nothing more than a 26P with extra cup added.. I had Mark true pitch a 28 Bravo for me to a 27P with a little extra tip cup and also had him Balance and Blueprint .. By far the best all around prop Ive run so far.. Switched from a 26 Fury and never looked back.. Better hole shot.. much better handling .. and really only lost about 1.5mph on top end..