I heard "Pedulla" fretless bass does finish on the ebony fingerboard with polly-utherane(?)... If the ebony is the strongest fingerboard, why they coated polly..on ebony? Is it necessary to finish on ebony fingerboard to protect for using roundwound string? Does "Zon" fretless bass also coated fingerboard to protect the fingerboard for using rounwound string? Will coating(polyester) on ebony fingerboard(fretless) increse buzzing on the neck? or bridge? 'cause sustain is too good and attack is too strong? do you recommend any good roundwound strings? some people say nickle plate one is best...is that true?