Max Combattracker Height?

I can set the combattracker height in utility_combattracker.xml under <windowclass name="combattracker">, but once I specify a height beyond somewhere around 900 it doesn't get any longer.

I'd really like to be able to have a much longer combat tracker to fill my entire screen from top to bottom, but something is preventing it. Is there a maximum limit for windows somewhere and how do you override it?

For example:
<placement>
<size>
<width>527</width>
<height>1512</height>
</size>
</placement>

Ok, just after I posted I had another look at the window class and noticed <sizelimits> and within that <maximum>. It seems that windows get a maximum set, but you can override it by setting it explicitly. For example:

<maximum>
<height>1200</height>
</maximum>

The default max window vertical size is 1000, I believe; unless specifically overriden in the windowclass.

Regards,
JPG