Finally ran my Zonda ,graduated from a spartan,to a HK genesis ,to Zonda ,talk about a whole new level ,need a little help please ,still learning names of parts ,the flex cable is 2 parts ,the flex sticks into a drive shaft that runs thru the strut to the prop ,this shaft has some in and out play ,once your on the gas the shafts would be pushed in ,but on the bench is it ok for these to have this play? The dog won't take out the slack, also this has bullit prop nuts with a set screw, I'm trying to buy extra but can't find them ,with the dog in place then the prop then this nut all the way on its not a real tight fit for the prop,I can move it just a bit on the shaft,should I put extra thrust washers to keep the prop tight between the dog and nut? Huge learning curve this summer getting into boats ,it's to hot here to do any other RC ,this site has helped so much ,thanks ,yes the Zonda is wicked,coolest rc I've got,probably the fastest too,