Which bike for hills for a heavier person?

[JonE]

They're excellent bikes when working properly, especially if you don't mint the legal 15mph cut-off.

Have a look at the LCD to see how tight it is (if you have the removable one). If it can tilt a bit sideways, stick something in the gap so that it can't move. The only other thing to look out for is the pedal sensor, which is optical, and it can become dirty if you use it in dusty or wet conditions, then you have to clean it somehow.

Thanks - I'll give those options a go if it recurs.