I upgraded my driveshaft this summer to the new screw in style rather that the splined on both ends style. I did not change out the floating bearing and seals. Should I have? Is the new shaft smaller in diameter than the old style? My bilge pump was acting p this summer and when it isn't running, it takes on water pretty fast. If it is the seals, I want to replace them this winter to get ready for the spring. I just want to make sure I get the correct setup. Thanks for any help you guys can give me.