DX7s main board connectors?

I need to replace a mainboard connector (J13) on my DX7S. 

 Looking at the service manual parts list, the connectors (J1 to J13) are not listed. 
 

 They appear to be a JST or Molex type - does anyone know the vendor or part number?
 I measure 2.5 mm spacing on the pins - which are not square, but a flat blade type.
 

 If I can't locate a replacement, I could try a standard header (2.54mm spacing) connector.
 

 Thanks for reading!
 Mike