Can't uninstall legacy LB tools

I’m trying to uninstall LB v1.8 after successfully installing LB 1.9. However, the uninstall gh file runs but doesn’t remove the LB apps even though it says it did. I’ve also tried to delete any file relating to LB in my C drive roaming grasshopper folders, but the legacy LB tools are still there.
I also have pollination, but prefer working with the native gh set up - does anyone know if the Pollination prevents uninstalling legacy LB apps?
The last time this happened the only way our IT dept could get rid of legacy LB apps was to completely uninstall rhino and all gh apps, and reinstall rhino. Is that the only way?

When you say “Legacy” what do you mean? last version of Legacy was 0.0.69 from 2020 [!!].
You wrote Legacy 1.8, so I’m confused a bit …

If it is the Legacy from 2020, you just need to go to:
C:\Users\USER_NAME\AppData\Roaming\Grasshopper\UserObjects and delete HB_Legacy and LB_Legacy folders.

-A.

forget the legacy bit, I meant 1.8
I managed to uninstall it in the end (deleted any file or folder connected with LB and HB as well as a system uninstall ‘register’ our IT did.