Should have listened to Bob Dylan Si, the answer is blowing in the wind. :D

You have the lid off yours phil, how do you secure your filter?

you can either cut the lid out, mine was, or use lockwire/duck tape (done that too!)

Mine is fully open, to suck the birds in. :D

Thats almost a sexual offence (ill get my coat).

I just through away everything that seemed heavy and I might not need...... including the air box.....

then replaced most of it 'coz it turns out that I did need it.

I put a couple of sponge filters on the end of the inlets,, did the job.