HELP ME WITH PLUG ADAPTERS!!!PLZ

[Daniele]

HELLO to everybody,

Lava lamps are an old passion, yet unsatisfyed till last wednesday, whan my first lamp, a satin silver astro from beginning of the nineties hit my mail box... since then...a lava lite from the 80ies and an aristocrat followed.
There's a terrible problem: they don't fit in the plug :(
I had an USA-ITALY adapter, but the american OLD plug doesn't fit in the holes, since one stem is wider at the point.
Help me please

[Daniele]

Thank you guys!!!
didn't know you could file off the wide area.
the problem, DR.WHAT, is that I guess it's the opposite: the newer plugs have equal stems, the old had different ones. Do you know if they sell adapters for the old plugs??
bye