The tensioner never seems to sit back where it started after turning the engine over, you're not the first person I've read questioning this and I don't think you'll be the last but as long as you tensioned the belt correctly in the first place I wouldn't be to concerned.
You could wait and see what other folk say though, it certainly wouldn't hurt to have more opinions.
Have a look through the faq too
http://www.myturbodiesel.com/forum/f...8-2003-a-2976/