I asked Craig at Whiplash about this. He was in the middle if making me a new cable terminated 2.5mm, here's his responce.
I will have your cable shipped tomorrow (today really). The AK240 female
2.5mm is very poorly mounted. There is a variance with this PCB female
jack. Now most of this is with units in Japan.
Plus I have a much better connector now!!
Sorry, what does 'poorly mounted' mean? Also how long does Whiplash take to create custom cables? Be interested in a review of your new cable :). I find the 2.5mm connector to be poorly made on the specimens I've seen so far on the market, a right angled one would be great.