I have bought a new pair maximus props last year and put on 15 hours on them but discovered after my second trip this year that there's a lot of room on the hub insert ,would mounting thicker plastic plates solve the problem or is there an other problem ?

Your tolerances are on the high sides the oposite way. Wrap a 1" piece of msking tape around the insert and the strips twice and reinsert the insert. You'll be fine.

Brett

thanks Brett !!

Went out today and hit 72 mph whit my 34 bravo,s @ 3750 rpm ,whit the 32 maximus I got from you I got no further then 3600 rpm looks like I need the 30 we talked about in the first place .

what do you think ?

Could be the best idea.
Call me to discuss it when you can.

Brett