Things just not going right this weekend

I have this weekend been fixing a new screw adapter thing to a Ul section facelift sent me a while back. So off I goes to the van to add this to the pole and I for the life of me can not get the push fit adapter out of the first section! I had no choice but to hold the first red clamp for leverage .Red lever clamping part not lever snapped and that push fit adapter is still stuck in there good and proper .I even heated the adapter up a little with hand hot water to see if that would help,but nope still stuck in there.
Anyone else have any problems with the push fit adapter ? I told them before it was very tight fit ,so tight I cant get it out ..
Any ideas on this