I don't know when Eric ever finds time to sleep. As I said in an earlier post, he called me on a Saturday morning. You can't beat that for customer service!
Just as a "nice to have", I would like to know whether or not I should be concerned about getting the new barrel pin (or any other upgraded part, for that matter). It would be very helpful if Eric had some way to communicate to us which range of serial numbers had the pin in question. I understand in the earlier days, the serial number order was not a good indicator of the order in which the gun was completed, but rather the order in which the frames were produced. I am not sure if this is still the case, but I know I would welcome any way to identify if my R9 was up to current spec. I know I could always call the factory, but this doesn't seem like a good long term solution for the R bros, - there are only two of them and the ratio of R9's to them is growing every day.
Just to be clear, I am not talking about a catastrophic problem. I have full faith that should a part be a real problem, we would all be getting phone calls and every other notifiication you could think of. I am just concerned with keeping up to current spec.
You know, I wouldn't mind chipping in a few dollars a year on a subscription basis so they could set up a self funding subscription model. After all, these parts are not without cost to manufacture, and it's in all of our best interests that they succeed. Heaven forbid they make some extra money for themselves!

This is probably a good issue for them to consider, as there may be other parts in the future that they improve, as well.