[Chalky]

Hello

I have a Line 6 Variax 300 nylon string guitar. After years of not playing it I now need to use it for a gig and find that the string height is a whopping 4mm at the twelfth fret. It needed some neck relief adjustment but I can't persuade myself that adjusting neck relief will lower the strings that much ... do I need to sand the saddle? Grateful for any advice here..

thanks and regards