I get what you're saying about how depressing it is when we know our disease better than the doctors that have to treat it. But take heart; they do learn. The decent ones do, anyway. It's always nicer for both of us if we, as patients, can approach the doctor with respect for the knowledge they DO have. One of the best approaches is to ask their opinion on information you've found; bring a printed copy with you, and have it already highlighted on the important parts. This might be an approach to take with your sleep specialist, who sounds like his knowledge of this disease is dated.
For example, print this doc:
http://www.rls.org/Document.Doc?&id=2112and highlight the part on p.4 about Daily and Refractory RLS, on p5. the parts of the Table about Daily and Refractory RLS treatment, on p.6 "Augmentation is....", on p.7 "All dopaminergics have the potential to cause augmentation; levodopa .....", and other places, wherever it talks about somehting you feel is relevant to your situation. Except don't highlight anything about opioids, other than maybe the title of each class of drugs. (Don't want to fuel any thoughts of drug-seeking, if it's common in the environment you're in.)
The progression of treatment attempts, if you read the document, is to try the RLS/WED-approved dopamine drugs (ropinirole/Requip and pramipexole/Mirapex ), if htey don't work try anti-convulsants (or an anti-convulsant in combination with a dopamine drug), if that doesn't work try an opioid, with or without a dopamine drug or anti-convulsant. there are a lot of different combinations that are possible and every RLS specialist knows that each individual needs a unique solution,. It takes a lot of experimenting, as a team, you and your doctor have to work together to find the answer. It simply isn;t going to be found by one of you on your own.
A first step is to ask your doctor or sleep specialist - or both - what they think of that document, telling them you found it in your search for information and it's published by the RLS Foundation.
My understanding of augmentation is that you have to stop the offending medication completely. It causes the problem, so you don't want it in you anywhere.
I hope things work out for you.