I have two, a newer one with the duel extractors and a older one with a single extractor. On the single extractor model I replaced the extractor with a power customs and it has ran 100% ever since. I bought the duel extractor model new and the other one used. FWIW the dual extractor model has the scope mounted. And the single has the Volquartsen trigger. I would replace the trigger group with the stock one.
Asking $1,100 for either in stock form.