Lens Cap Mea Culpa
I apologize if comments offended, comments about meds and replacement lens caps, these being a vital item you might misplace in the field, of value to protect your camera's lens, but not helpful in taking photographs.
My X-10's cap is still around. But it struck me that forum members might like to know there is an inexpensive substitute, an ugly white plastic pill container lid, 48mm internal diameter, that slides on 5mm and fits very tightly.
These must be available in the U.S. as the Canadian/U.S. patent numbers are marked on the inside, 952476 and 3627.160 respectively. Just trying to help!
Ask anyone over 60 how's it going and they'll tell you 'so far, so good!'