Has anyone used 3rd party adapters recently and recommend a brand? The genuine pentax adapter seems to be out of stock from Pentax in the US, and also at adorama and bhphoto. If the Pentax adapter is available I'd be happy to go with it. Since it is not available, i'd be glad if anyone with experience with 3rd party adapters, could write to this post about any issues you may have faced. There seem to be several adapters available on ebay, Kood, Marumi, Roxsen and so on. Any specific comments? Thanks in advance.