Taipan Vet baffles

Good morning everyone,

I just made a oups move. I took my baffles out of my Vet. to check how they work and try to use the idea behind the good system that they have to quiet down my son's Bullboss.

But by doing so, I scrambled the puzzle before taking a pic. Now I don't know if the Long spacer goes first or last.

1558547419_9516444375ce58bdb8e8704.49374279_20190522_113612.jpg


Any help would be great.

Thanks all