Problems with Lowepro Photo Trekker AW II. Any help?

Got one yesteray. Quality, storage is good. The only problem is the sternum strap is actually a throat strap. It looks like the throat strap will not adjust any lower as stitching prevents this. Has anyone had similar problems with harness size? Is there a larger harness available? Have emailed lowepro. Thanks in advance.
Dave

Just happen to have the instructions for the Nature Trekker I bought 2 weeks ago in front of me...

Figure 8 says"Change the vertical position by pulling the TRI-Glides up or down on the webbing so the strap fits comfortably acreoss your chest"

Does this help?

Thanks
Had a closer look.
I think it was too low on my back.
Higher makes the shoulder straps lower in front.
Dave

I have the same bag and had the same problem briefly. I adjusted the back higher, and all is fine. You have to use that funky plastic insert thing and move the whole rig. Kind of a pain, but does the job.

Well; one thing is for sure; anyone who has one of these bags knows how much velcro is in them and that it won't separate on it's own