2002 JP6 nut question

Hey folks, picked up an early JP. During the setup I noticed the nut slots for the heavy strings are quite worn. Researched spare nuts but the EBMM store has nuts for JP models after 2006 and they appear different. Internet search results were limited, any suggestions where to source appropriate nut or is the 2006 suitable?

Separately, the tremolo pivot fulcrum points are worn, is this enough to cause instability?

Thank you