I am busy trying to install the Rans quick disconnect for the Euromesh on the Strada.  I took the angles off as the instructions stated.  The kit came with a rectangular piece of plastic that looks like it's meant to go under the new angles, but I can't see why it would be there.  Any idea?

Yes the problem is that the instructions on the Rans site are an exact carbon copy of the paper instructions.  They really should have more detailed pictures step by step.  As it turns out the extra piece of plastic was sent by mistake and not necessary.