How do i change a Trima valve block made by nord hydraulic from closed to open centre

[DJ-speed]

Hi I've changed the spool block from an old quicke one which was no longer Centreing and is obsolete to a trima one, also did away with 4 hydraulic hoses, so looks much tidier, but I realised when I plumbed it I that it was previously set for a NH TM, with closed centre setup, and I've put it on my ford 7810, which has open centre, so it doesn't work properly. I've been told and my research says it could possibly be changed to open centre, but can't seem to find how. Anyone ever done this? Thanks

 

[Tractortech]

Now Then..
Have you got some pictures??

 

[spark plug]

Dose it look like this:

If so you can change them, but you have to replace the spools that are no longer available.

I’ve been trying to change the above from open to closed centre and without the parts being available it’s, a non starter.

 

[Audi90]

Swap with each other?

 

[DJ-speed]

Looks exactly like that, so yes swaps

 

[DJ-speed]

Dose it look like this:

If so you can change them, but you have to replace the spools that are no longer available.

I’ve been trying to change the above from open to closed centre and without the parts being available it’s, a non starter.

Sent you a pm