Ah, that was my mistake then...
But You have delivered beautiful work!!
I think I don't need to tweak it, but maybe I will finetune it.
The delay works great, but I like it faster, so I turned the random delay down to 20 
I'm gonna work on a test PCB now and hope to fit it in a clear hose of tube.
I want to make 10 or more 
Again, THANKS!!