I use a large deep well socket , a c-clamp and a hammer. Use the c-clamp to hold the cylinder in place. Put the clip over the back, and put the large socket over the clip and strike with the hammer. Might take a couple of trys to get it to seat.
I got a short screwdriver jamed against one of the spring coils and was able to get one side in...took another screwdriver and punced the other side in....had something against the cyl so it wouldn't move....now on to the other side....:nanawrench: