Bailey Approach side wind issues

Skyerod67

We have a Bailey Approach 620se - admittedly it has the full 60% rear overhang with an end kitchen which may contribute,,but we seem to suffer from side winds to an alarming extent when there are only the lightest of winds.

We don't like going on motorways. Travelling on the A1 through Nottingham/Yorkshire and a truck overtakes, it veers  alarmingly and we are down to 40mph!

Have any Bailey owners experienced this,particularly 620/625 owners?.