Modifying a part currently on hold

[Michael Heidemann]

I have just downloaded your files.

If you change the header and say that all is your work, then it needs to be a new submission. But I think that will be deleted afterwards

Better way is to take a part that needs some correction and do the corrections. Then you insert a !HISTORY line with your name and what you did to this file getting better.

So to answer your question: Please restore the old header information and submit as 2515.dat update.