Doddy and All
Mate the next thing ive found is
https://www.aliexpress.com/item/3290...chweb201603_55

they reckon ( i think ) that @ 220rpm then torque is 24.25 kg.cm is this 2.4NM ?
alot more expensive but will see if i can source a cheaper supplier $NZ -$US not very good exchange ( thanks Trump)

I hope i could put an encoder somewhere ( can it go on the end of the ballscrew?)
Richard