RE: Composite-Arf rookie questions
Some Hitec & JR brass washers are of a bigger dia, you will also notice the slight reduction in dia on the non flanged side of some brass washers, these can be drilled out if the screw will fit into the flanged end.
Lots of people do not use the supplied rubber and brass washers and just screw the servo directly onto the ply servo mount, I suppose with the low vibration of turbines this can be a viable alternative, however the line and level of the control push rods can be compromised by doing this.
You will love the Rookie, one of the best kept secrets of the all composite world, those that say it will bounce are just landing too fast, don't believe a word they say LOL, with the canards acting as a brake and up vector on landing the Rookie will slow down beautifully and settle onto the mains without any trouble.
Hope this helps.
Mike