I have noticed that if I try to add pictures to a reply and those pictures had been submitted before it wont let me add them. Am I doing something wrong? Sometimes the same picture can be advantagous in helping with more than one question.

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1983 300SD
200000miles

You can only upload the same picture once.

If I need to repost a picture, I change the file size (recompress it) and title name.

This is to show another, somewhat easier, way to re-POST a photo...
(1) go to your profile, then
(2) the " User CP" and finally
(3) the list of your "Attachments".
(4) Then you copy the http address of the photo you want to re-POST, and
(5) paste it into your POST as I am doing here with my last photo attachment to another unrelated THREAD:
http://www.peachparts.com/shopforum/attachments/diesel-discussion/38850d1165336744-its-critical-how-you-set-your-transmissions-vacuum-system-your-diesel-mbz-vcv-100_5283-ed.jpg

Yes, I think that one should also be able to somehow post the actual photo in the new POST, but I have not figured out how this can be done.
OK,