Hey guys,
this is where I'm stuck at the moment



Damn cappings won't fit no matter how much I swear


I tried to make them engage one side or the other first and they slightly start to fit but only gain a few millimeters,and no more than that.
I tried waxing them,nothing.
I also tried spreading the edges with a piece of timber but didn't want to bend the capping

I guess there may be a trick but I don't have a clue!??!

Any skilled restorer/rebuilder here?
I need the Cube back on the road...

Any suggestion appreciated!
Ta