SO..... another update to this.
found a thread on google saying they had removed their boot weight which i have done. they got so annoyed with the squeak at one point they opened the boot punched the crap out of the plastic under the boot and heard a very distinctive sound of fixing poppers clipping in place, after that no more squeak!
so i gave it a go this morning to no avail.... Just now i was putting the boot struts back on... on my own.. i jammed my hand in with the bracket and got a little bit upset
I thumped the bottom of the boot to hear a nice click sound
Going to try it out later to see if its fixed.