I am trying to install new circlips to my 2 stroke piston but it's way too hard.

The circlips are quite large for the hole in which they should fit, they are also very strong so I can't insert them w/ my hands. Even if I use needle pliers it's still hard and I have ruined the old circlips that way.

If I over-stress the new circlips then they will loose their spring and elasticity qualities and eventually break after using the engine; it would destroy the engine.

Please look at my video on vimeo:
How do I install circlips on my 2 stroke?