./kernel/user.php
The line:
$this->initVar('user_icq', XOBJ_DTYPE_TXTBOX, null, false, 15);
Just in case anyone else is looking for the information
I did edit the other files you mentioned first. They limit the max entry on the fields but there was something behind the scenes limiting the insert into the table.
For anyone who isn't that up on command line syntax, the following find statement ws helpful:
find . -type f | xargs grep -i "search string"
Thanks again!!
Rick