Sky Interleaving

I have done a quick google and come up with nothing except 2009 information.
Is it possible to get interleaving turned off, or at least turned down, on my connection?

I have just today rejoined Sky ADSL after a brief sojourn at Plusnet (who were awesome) and am looking to optimise my connection.

Any other optimisation tips for a first time user (MTU? *Shudder*) most welcome too.

Thanks

Joined sky ~1 month ago and posed this question to them.
The answer is no, they can't adjust the DLM manually at all. However, after a week, my pings dropped from ~30ms to ~13ms on ADSL, so it looks like if the line is stable, the DLM drops the interleaving automatically.