Gearbox locks up...

[Wilmer]

Hello, I need help with my GasGas EC 125 05 that something have hapend with my gearbox...

I can't get it down to neutral or first gear, and it locks up in all the gears exept for second gear. I have split the engine to see if I can find the problem but can't find anything wrong except for a broken washer that i found all the pices for. But that doesn't effect the gearbox when the engine is split.

I took the gearbox out of the engine case to look at it more and everything is in good chape, cant find anything wrong with it.

Here is some pictures of it. It's very hard to get good pictures of the gearbox but I can take new pictures if someone needs. I also got a video but for some reason it doesn't work to upload it here...

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Very grateful if someone can help me