[solved] Spacing between icons on TLB toolbar

I have recently installed TLB 6.5 on my new PC working under Win 8 and I want to add some spaces between each icon because I realize they are too closed each other as shown below:

https://sites.google.com/site/eddynat2/B...-57-06.png

What can I do to modify space between each icon on my TLB Toolbar ?

Thank you