P3steel y axis belt idler problem

I have been using my p3steel with no problems for the past 2 weeks but know I am unable to keep the belt on the y axis idler. I have reinforced the stepper mount to stop the flexing realigned the belt in the carriage mounts but it keeps pulling of to one side. Is there any way to make it self aligning?

Thanks Nikki

I have found the problem the front of the printer has bent slightly so I have come up with this as a ruff idea that will alow front to back and side to side adjustment of the 608 bearing and will reinforce the front of the printer. It is times like this I wish I was better at using the design software. I have attached the ruff design.



thanks Nikki

Mine pulls off to the side as well. I do plan on doing something about it eventually, but so far, it hasn't been a problem.
Good luck with your design. Let us know how it works...