The front wheels lock on my ABC tandem, any I find it hard to push. Any ideas what's going wrong?
Hey, Noreem,
Try a bit of maintenance - cleaning and oiling them. HERE is an article about maintenance of your stroller I wrote, and there are some tips and tricks.
Other than that, you will need to contact the seller / brand because there may be a fault in that area.
Your -very berry- Eli.