I was on the Kimber site the end of June and saw the recoil springs were no longer marked "out of stock." I decided to order two sets so I would have them. My Solo has about 1100 rounds through it right now and is shooting very well. I received an order confirmation but hadn't received an actual shipping notice.
Later, I got on their site and saw they were out of stock. I figured the earlier status was in error and I wouldn't be receiving springs anytime soon. Well today I had a knock on the door. I opened the door and saw a package. I couldn't figure out what it could be since I did;t remember ordering anything. Inside were two sets of recoil springs.
I ordered on June 28, so about two weeks. Not bad. I'm happy.