[1000mp] Source for 4 pin Din RTTY plug for FT-1000MP MkV Field?

[Art Searle W2NRA]

Hi,

I'm looking for a source to order 4 pin Din RTTY plugs for my FT-1000MP MrV Field.  I've heard  of non-standard plug with different pin numbering and even different pin placement so I thought I'd ask here.

73 Art W2NRA