Preventing WYSIWYG editor from rewriting tags

[backwoodsman]

I am using a number of personalized tags but TinyMCE insists on rewriting text even inside the {}. For example it substitutes & < and so on even inside text strings being passed to the tag function.  I have tried all the editors to see if any leave the tags alone, but all had this and other problems.  Is there any way I can either

  - turn off the WYSIWYG permanently -- it seems to be at the switch that the editor interferes with the contents of tags.

  - use a non-WYSIWIG editor

  - patch TinyMCE to have it leave everything between the curly braces alone.  This would probably be best, as the WYSIWYG is easier for other users, even if I find it a PITA.  I have inspected the TinyMCE code, but don't know any javascript and can't even guess which file to attack.

Anyone know what I can do?  TIA