This above image is the one that i am using.
it is very nicely built but unlike most it has a push in lock fitting accepting 6mm/4mm tubing.
Other than its sensitivity it is solidly built and got nice little screwdriver slot for fine adjust (which it needs IMO)
I thought the MNV4K2 had a 25 turn valve therefore it having a very slow regulated adjustment output.
But what i have been reading on the previos few posts, it may be not much different to the one above.
For everyones interest the model is
MRFC - 6mm/ 1/8" Needle Â£9.76 + vat UK
Can be acquired from the westgroup.co.uk or clippard suppliers.
Luckily this needle has an 1/8" connection for direct connection to other attachments, unlike the 4K2.
So it looks like i will NOT get a finer adjustment needle then ?
They can hide, but they cant escape