FX Impact-Hammer spring is stuck when cocking the gun

When cocking the gun some time hammer spring is stuck and then it is released when the cocking lever is halfway. This dosenot happen all the time, only once in a while. But when this happens the next shoot will be a flyer. Is there a way to remove the patrs C8,9,10,11. I do not see anyone remove these parts in any disassembly video.

https://youtu.be/bM-Jyxda-LM

Watch the hammer spring tilt and straighten at 0.05
 
You can take the spring, hammer and guide out, it is explained in the Master Class videos. Check That...C9 just needs to be unscrewed to take it out.

https://www.youtube.com/watch?v=TjLeO7O8DA0

You are right, there is no mention there but if I recall correct when you remove the hammer rest, you can take out the spring, hammer and guide, check this one: https://www.youtube.com/watch?v=HDCIyO9mxmg