Have started on my 19 inch span Rivets(from an old plan in Amer. Aircraft Modeler mag. of which I inherited thousands from my Father)and would like to contact Campbell's Custom Kits aka "lil red riding hood" to obtain some spacers for props. I use Cox props now on the .020 but would like to experiment with others and need the spacers that he provides. I have the plans at 19 inch WS now to experiment with but will eventually scale it down to 16 inches for my .010. Also, where can one find wood props for the .020 in a 4.5/2 or 5/2 size?