Timing belt I get the giant

Hallowechen municipality
I changed or at least tried yesterday after he already 40Tkm overdue the straps
1. Engine set to OT
2.Fixier flanges used on the camshaft (Von der Fa. Matra )
3. Unsolved camshaft wheels
4. Belts laid on chip roll stretched to the right damper length
==References==
5. camshaft wheels unscrewed and fixing flange removed

After I turned 2 round the motor to see that the ventiels do not hit on anything, I noticed that the tension of the belt is ok so far, except for the piece between the camshaft wheels that is so loose that I can pull the belt from the water pump soon and the fixation flanges don't fit on it any more when I put it on OT.

I know what I've screwed up for shit

MFGruss Heiko