Krap OpenDive design

Hi,
Just want to share my OpenDive design with you.

The original design is here : http://www.thingiverse.com/thing:96878
I took some ideas from the Croccy22 design : http://www.thingiverse.com/thing:93460

My version :
The lens holder has teeth. It can't rotate, so it's perfectly guided.
Each movement on the left or right moves the lens by 1.5mm steps, and you can move freely frontward and backward. You will certainly have to adjust the teeth dimensions because I found that the good