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Worked for a main dealer, run my own business. Used that tool once in my life.
Totally useful that 1 time I needed it.

Regarding c clip. My logic would be to do the opposite to what hes doing here in this video. But sound reasonable . A bit long video for such a small subject. But whats your take on it

He is sort of right. Those bits only really break off if you reuse them.
The thing is, most 2t engines have that type of clip. It's very rare you see just a regular c clip

Also the lateral movement of the pin is pretty small....

Sorry. My english sometimes" and brain,and memory" , i meant that clip what you now call it. Anyhow its those small things you learn that makes working on engines so fascinating and fun. Like an never ending well of knowledge