Greetings from Brazil, I am working luthier from USA on my first Selmac build and since Collins books is not to be had I have a couple of questions somebody can give feedback? Do sides have slight taper? Plans I have (StewMac) sides have different sizes front and back...wider in back and narrower in front...are sides tapered on bottom or both top and bottom ? What is standard fretboard radius? Anybody build with adjustable neck to reset angle (luthier Mike Doolin style) ?? Compound radius fretboard?? I know the purist will cringe but the design can be improved as Mario did to his plans over his lifespan...and other luthiers have modified instruments with basic plans and few changes. thanks ,ciao