Setting Portlet Header Widths (not region widths!)

Am having trouble with portlet headers / portlets' widths being determined by the text width.
My region widths are set yet I have noticed that when I show portlet headers the width of the portlet appears to be determined by how many text characters in the header- (not how many text characters in the portlet itself)
Is there some way I can set the portlet width (as opposed to the region width) to ensure uniformity across my site?
Any help appreciated!
Thanks
Jo

The user you have responded to is totally unaware of your post as watches on threads only persist for a few weeks. Do not post follow-ups to ancient threads. Many of the participants in such threads will no longer be active on the forum (check the "recent messages" in their profiles).
Posting follow-ups to ancient threads/departed users is NOT an effective way of getting help:
<li>Other users may ignore the thread if it is closed
<li>Your assumption that the questions are related may be incorrect, leading to confusion about the nature of the problem and potential solutions
<li>Watches on the thread may have expired, so the original participants may be unaware of the new post, or they may no longer be active on the forum
<li>You have no ability to mark posts as helpful or correct
Post your question as a new thread, including at least the following information:
<li>Full APEX version
<li>Full DB/version/edition/host OS
<li>Web server architecture (EPG, OHS or APEX listener/host OS)
<li>Browser(s) and version(s) used
<li>Theme
<li>Template(s)
<li>Region/item type(s)
<li>Links to related posts and threads (using the methods in the FAQ)
Please read the FAQ and forum sticky threads for more information on using this forum effectively.
Update your forum with a real handle instead of "user11986803".

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