Last rubber band not shoot and stuck

Tnis is cool gun but last rbd dont shoot

Fantastic design, it works! but the only concern is that how to choose the right rubber which will determine the force of shotting, now it can shot with very small power. Tried 2/3/4 runners but cannot solve it, maybe not the right rubber

I was not entirely happy with this instruction. It was OK.
I wanted to build the awp without the rubber bands as I did not intend to use the gun. Unfortunately there were no instructions/pictures included, so I had to improvise a lot.
Sometimes I also had to guess the length of the grey axles as it was very hard to see which one to use in the PDF. There must be a way to add the length in the instruction software, right?
I thought for 25€ (yes I know it is almost 500 pages) it should have been a bit better in my opinion. Still a great model though!

sooo good instrution. The best when i get the black details