Couldn't find anything in search, so how do you remove them to change them for non - orange bits ?

 

IF you mean the bits on the front wings a few inches back from the front - it just takes a little bit of brute force and ignorance. IIRC you just apply upwards and slightly forwards force at the bottom corner, then the bottom can just pop out. While since I've done it, admittedly.

 

that sounds about right.

Gordo