Just curious where you bought them from, I think it's a bit unreasonable for a shop to sell a pair of USD 1,700 IEMs without letting the customers tried them out first.
So it means you don't really know what they actually sound like at all, the problem is that you might not like the sound signature. I've mentioned in an earlier post about how I loved the AKR03 when I heard the demo but the pair I bought sounded nothing like the demo, and eventually they were found to be faulty. So in a way, even if you had them re-moulded, you may not know if they are faulty or not, and the warranty would be voided if it was done by a third party. I personally think it's quite risky to re-mould such an expensive pair of IEMs. I have very small ear canals too, so small that I couldn't even get my Etymotic er4 halfway in. I'm quite surprised to find the AKR03 very comfortable to wear, and they seem to fit quite well with the supplied silicon tips. I don't think the fitting is that different from the universal Westone or Shure IEMs.
I personally think you should sell them like one of the previous posters suggested and get a pair of CM instead. According to a lot of Roxanne CM owners, the CM version sound a lot like the AKR03 anyway.