Turner DW link journal bearing replacement – advice sought

I’m just replacing all bushes in my Sultan and cannot get the 2 DW link journal bearings to fit onto the hex location spigots on the DW link plates. I can start them off but they won’t push on and be seated on the DW link plate by hand.

Should they be a press fit, ie using a press, or should they push on by hand?

I have managed to push them onto the spigots but guess what, they won’t come off again by hand.

Has anybody on here managed to change theirs, and if so how?

Cheers