There's a few threads on here about the "chamfer & jubilee clip" method. I chamfered mine & used three jubilee clips to compress a little. My 10ton eBay press pushed them in with no trouble.
Main recommendation is to have a second pair of...
Do the nut (5) at the far end first. It's easier while the axle end is still attached. Then undo the two marked 7 & 8 in the diagram. If the bolts are fouling on the roll-bar mounts, just undo them & let the roll-bar hang down a bit.
Also do...