Hello,
You mentioned that the plastic is the same for de E3 than the E4...
Well, I thing you are wright, whit the only diference of the clear parts... Is that true...?
For me the E4 has a Scuare aluminium canoupy... Some E3 were retrofited whit this, while some erly E4 has the older... Is this correct...?
But you have only one type...
Thanks
Bye