Check for loose headset. There
should be no play in the steerer
assembly.
Remove front wheel and
carefully place Gocycle onto a
non-slip surface. Grip the
handlebars and rock forwards
and backwards to check for any
fore-aft movement between the
handlebar stem fork assembly
and the main frame as shown.
The connection of the handlebar
stem fork assembly and the
front frame should feel solid and
only be free to rotate with
respect to the main frame.