Thanks Ian. I had a feeling it was due to a combining of pilot supplies and other items. As others have said, it might be better to change the "Female pilots" tab to "Female items" or similar, and add a "Male items" tab. But in this day and age I don't think we need to separate the sexes; just group by categories instead (sorry, it's the ex-librarian in me coming out). :-)
BTW, I tried to edit my earlier post but couldn't, to add that the Clear Prop site is great and the prices are excellent, so keep up the great work in that regard.