Okay, thanks!
So I will try to traffic my hop up. If I've understand, the hop up nub serves to put down the rubber. So y can try to put something which do that in my hop up. I use 0,36BB I find they are really good. I hope it will work. I was just shocked because I have read the original hop up is really good and mine don't work well..
For the spring guide stopper, I think both match. If you buy it, i will be interessed to know if it works. On the third link, it seems really good quality.