I am wondering if you can help me with some info? I am just starting to build a PT-25, and the directions are not clear at all about the "blade shims". The only mention of the shims is in the rotor sub-assembly directions, and the text says only this: "If you want to use the blade shims, glue them in place now." There is no other mention of the blade shims anywhere else in the directions, (that I can find). It would seem to me that the blade shims set the proper blade incidence, and they would be required, not optional. Since there are no other specifics about them, I am hesitant to go ahead and mount them, for fear of doing it incorrectly. Any assistance you can offer would sincerely be appreciated.

Thanks,

Joseph