Schoenberg for small hands?

I love Schoenberg's music and have been playing his 6 pieces for piano for a couple of years now ... I say that, but I have always had a problem with some of the pieces as it seemed that Arnold had such big hands and I cannot master the technique without breaking up the beautiful extended chords.

With most romantic or baroque pieces where I have this issue - and I'm sure other people do too (especially with some Beethoven pieces) it is fairly simple to *improvise* slightly or interpret it in a professional manner, but I've found that quite a few serialist pieces don't allow for this.

Does anyone have any ideas as to how interpret Schoenberg's pieces without ruining them?! x