The backrest creeps when the slot has not fully engaged or grit sits in the adjuster. Take the rider out, then run the recline through its full travel once and settle it firmly into the slot you want, listening for the lock. Check the adjuster strap and its clasp at the seat back for wear, and look for crumbs at the slot, which is the usual cause rather than a broken part. Smooth the webbing flat after each change, because a twisted strap props the mechanism open, and contact support if the backrest will not lock at any position.

The fold refuses when the basket is loaded, a strap sits over the frame, or grit packs the hinge. Empty the basket first and check the harness straps are inside the seat, then brush the hinge clear with a dry cloth and work the fold gently a few times rather than forcing it. Listen for the lock click at the end of the travel, and check the stack stands square on its wheels before you let go. If it still will not lock, look at the latch for wear and contact support, because a fold that will not lock ends the trip until it is fixed.

The directional button refuses when grit packs the mount or the wheel sits at an angle. Lift the front end, spin the wheel to a straight position, then press the button fully while turning the wheel by hand until the mode changes. Brush the mount clear with a dry cloth and work the button a few times if the press feels gritty. Check both front wheels sit in the same mode before you set off, because a mismatch pulls the frame to one side, and never force the wheel past its stop, because a bent button ends the switch until it is replaced.

Lift the end of the pushchair with the noisy wheel and spin it by hand to find which one is affected. Brush dust and hair away from the axle, and check the hub and the spring seat for a trapped stone or a build-up of grit, which is the usual cause rather than wear. Most squeaks come from dry dust, and a clean axle quiets them. Keep oil away from the wheels and the springs, because it attracts fresh grit that wears the fit faster, and spin each wheel after cleaning to confirm the drag is gone before the next ride.

The hood sags when a panel has worked loose at one end or the fabric is twisted at the side rail. Smooth the panels square with both hands and run the hood through its full travel once, so the fabric reseats along the frame. Check that the mesh window panel is not caught under a rail, and free it with a fingertip rather than pulling hard. Do not pin the panels, because they need to move when the hood folds forward with the recline, and reseat the hood before the next ride so the line returns.

The wrap twists when it has been folded back unevenly or the seat straps catch it on the way in. Take the rider out, unfurl the footmuff flat, and refit it starting from the foot end so the wrap seats square along the seat. Thread the harness straps through their slots before the child sits in, because a strap under the wrap pulls the padding out of line. Smooth the surface with a flat hand after each refit, and fold it back with the edges matched so the next start is square.