They are tighter than a sixth former in a mini skirt!

I've tried to bang a flat rod to it with rubber hammer and still the fooker won't go past the end collets. Not sure if they will piss fuel out if I just leave them in that position alone?
Looks like a press jobbie but some tips from others would be good?
I
lubed up the rubber donut and bang it in for all she's worth and its in now thanks all!
