Has anyone tried heat setting the Aurora optima feed? Technically it should be possible because the feed is made of ebonite. Are there any caveats, warnings that you guys have run into while trying to heat set the feed? I have heat set several other pens like my piston filled OMAS milord and Indian pens like the Airmail 71J and 69EB with good results, so I know the process. I just want to make sure I'm not doing something that could harm the pen's finish, material etc. as this is my first Aurora. Thanks in advance!