I have quite a few Gillette British TTO one piece "Made In England" Super Speed/Rocket razors. But I'm having problems with a couple of razors with the Brit Pat No. 430,030 ones. They are the razors with the flat bottom blade guard. The other razors I have are the flare tip style ones 694,093. Anyway, the British razors have different riveting to hold the handle onto the razor head assembly. Looking down on the top of the razor with the silo doors open, the U.S. razors have smooth riveting, but the British ones seem to have a crimped/notched rivet. There is usually about 4-6 notches/indented lines in the rivet, like a tongue and groove pattern. I noticed that a couple of the handles and the rivet turn slightly. It's like the rivet isn't firmly attached to the base plate and there is a bit of play. However when I close the silo doors and tighten down the TTO knob on the bottom, the handle doesn't turn. It only happens when the silo doors are open. This never happens to the U.S. razors. The rivets on those fit snug and never move. It's just some of the British razors that I own have this problem. Is this normal for these razors, do others have any of the razors that have the same problem?