Malcolm,
The CO762 has some oversharp areas, some soft and is generally borderline quality, so unlikely this one can make it I suspect.
RO313 is a bit better, but you went overboard on adding contrast I suspect. You could use layers with progressive sharpening to help get rid of some of the jaggies on the landing gear, engines, flaps etc and then it would be getting close to being worth a re-upload I would think.
The LX135 again has several oversharpened areas, and generally looks dodgy on the quality again - just doesn't look crisp, as if the original capture isn't quite sharp?
The VS744 looks close, again perhaps too much contrast/too dark underbelly, and some jaggies (titles, flaps, cowlings, wheels) that could be smoothed using layers during sharpening and then it might be worth a re-upload.
Anyway, I also get plenty of rejections so get a second opinion
