The Team Durango website is now showing stock availability at the European warehouse, look for the green boxes in the top right hand corner of each parts picture. Here is the parts listing for the DEX410v4 for example:-
http://www.team-durango.com/parts.ph...02030&type=STD
Wheelspin Models and Hobbies are listing all of the Team Durango parts here:-
http://www.wheelspinmodels.co.uk/c/1166/
If the part is showing as 'Shadow Stock' at Wheelspin, they should be able to have it delivered to them in two to three working days.