Record Hand Plane

[Mike O'Keefe]

So I have gathered over the years 11 Record planes. I'm was looking at them and noticed 2 of them [No 4 No 7] have brass knobs for the cap lock instead of the lever lock. Just wondering if this affects the planes performance. I only use a couple of the smaller block planes. Thanks Mike O'Keefe

[David Publicover]

I only have a few planes but I do have a Record 4&5 with the knurled knob. I don’t find it to be an issue. Occasionally, I get some blade movement if I haven’t tightened it enough after sharpening but that’s operator error rather than the planes fault IMO.

[Jim Matthews]

There is one notable effect.
The knobs neither break, nor rust.

(There's no mechanical difference, as a fulcrum.)