[Sideband]

Yes you don't need a special trimming tool and if I remember, the adjusting stud is threaded into bakelite so shouldn't be a problem to turn. All you need is something like nail varnish to lock them with (my wife gave me a pot of pink nail varnish so any that I have done over the years are instantly recognisable....)! Failing that, a dab of correcting fluid (Tippex) should do the job.