To solve a problem like this (I have a dse905, but I do not care for the 901 atty) I got an adapter from litecig (901 to 801) and filed/drilled a small hole in the side of it. You get air
through the hole in the side of the adapter. Do this carefully or you may ruin the positive connection in the adapter.
One note, this works well with the new style m201 attys, but the older ones, not so much, sometimes a staple
mod seems to make the contact work, sometimes the older atty style just refused to
thread on at all.