They have the wrong array indices. There are two, one for each main wheel.
I have not tried this yet. I'll test it in the morning.
If you want to edit your file and test it, please give it a shot.
Ensure you change both instances of "wow". One is in condition, the other in volume.
- Code: Select all
#change this
<property>gear/gear[6]/wow</property>
<property>gear/gear[6]/ground-is-solid</property>
#to this
<property>gear/gear[1]/wow</property>
<property>gear/gear[1]/ground-is-solid</property>
#change this
<property>gear/gear[7]/wow</property>
<property>gear/gear[7]/ground-is-solid</property>
#to this
<property>gear/gear[2]/wow</property>
<property>gear/gear[2]/ground-is-solid</property>