Rixie Clip Bra Band Tightener

Since I received my Ewa Michalak 32/70 band bras a couple of months ago I have disappointingly found them to be definitely too big in the band.  I have got on much better with my 30/65 bands.  This is good news, as I seem to be getting closer and closer to establishing my true bra size, but it is also frustrating as it means I have a fair few bras which are too loose in the band for me.

Of course, the most obvious solution to this issue would be to get the bras in a smaller band size.  That's fine...but very few of us have money to burn so this isn't always an option, not in the short term at least.  So how else can we address the problem of owning a bra with too loose a band?

The most common thing to do is to alter the bra band to make it smaller.  There are various tutorials available on the internet (such as Helena's fantastic post here) which show how to do this but I am too scared to try them - hacking up my beautiful Ewas seems like sacrilege!  Surely there must be another, less permanent way?