He has posted direct here to France to me before. Maybe he has changed.
But that's perhaps irrelevant now.
I have to say on reflection that I'm not sure that the 060 power unit is good value.
The 040 unit is £376 and the 060 unit £551. I don't think £175 for an extra axle is justified.
For around the same price you can buy quite a lot (and better quality) from Germany.