See easy, what were you worrying about?

Them little clips, squeeze the raised bit with either a pair of pincers or some side cutters.

ok.... so I get it as tight as i can by mystery means then squash it with some blunt nail pullers... got it!

Tim,
these aren't particularly special, but they seem to do the trick with those clamps...

< http://en.wikipedia.org/wiki/File:Pincers.jpg >

ken.
( Sorry Joolz, I went to the shop at the wrong time.)

haha, mine look nearly exactly the same as the ones on that web page!

Proper old school gear, none of this Chinese rubbish .

S'all right Ken, we'll muddle along when you can't be here . But not everyone owns pincers, I don't, side cutter work second best providing you don't cut the 'lumpy bit' off.