That damn pressure nipple shook loose on me twice and it is (or was) a PITA to get back on (although this time I did it rather quickly and easily).  Used some RTV sealant a nylon washer and some lock tight on it so I am hopeful that it will stay this time.  All excited to get it back and running properly.  Decided to change to prop trim to get up on plane quicker (since I normally run in the neighborhood pond which is pretty much glass calm) and saw that one of the prop struts was cracked right at the joint.  Wonder if that has anything to do with the way it was turning well in one direction, not so quick in the other.  I wonder if it was that way when I got it or if it had anything to do with the time I hopped the boat over a turtle (broke the prop that time).  Either way, ordered a new set so we'll see what happens.  Perhaps I'll have my grim racer prop balanced by then too.  This thing has been fun but damn it takes up time keeping/getting it running, LOL.
Picked up a pair of plastic Y535s from the LHS, curious to see how they compare to the PRB1050s.  Also have a couple of PRB1051s coming to try out.  I just have a feeling that if I have to balance the metal one as often as I have to change the plastics on this thing I may not have the time to bother and may be better off just using these disposable things.
Did you end up able to tighten the flywheel down any better BC?