Hi guys, here is my introduction.

I'm from Denmark and I'm 24 years old. This is my first build, and I just had the pleasure of the first test run yesterday and it ran beautifully! until it went out and I got stranded 

Welcome, Tommy.!

Stalling and disbelief on first rides have happened to many of us.  The used K75 I bought stalled three miles from my home on its first ride after having been transported 250 miles by trailer from Maine. I discovered that the plug for the electronic fuel injection control unit under the seat wasn't tight enough. I connected it firmly then secured its latch and it has been a great moto ever since.

Good luck with yours.

Pull the spark plugs and see if they are wet or dry.
Regards Martin.