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To my recollection the attempts to use Glock springs ended up in a unreliable P99......
also to my recollection the best results where in cutten some of the stricer spring coils off (3-5 if my memory serves me well)

but I am sure that this post might serve you well.. it's overall a good read and some good bullet points to take from

Trigger fix

 

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If that is what you are looking for.....
Snapcaps... and pull the trigger 500 times....

Sorry I did never tamper with anything... so all I did was hoping to point you to the right direction......I guess I miunderstood the $.25 triggerjob..... hence telling you now to get Snapcaps