wooden ramrod

I have a Kibler Woodsrunner rifle and the ramrod appears to have become warped. I can get it 90% of the way back into the slot under the rifle but going any further it will get stuck and very difficult to get it back out. Any suggestions on how to repair this or straighten the ramrod?

I’m curious about how often a person (frontiersman or such) would have had to replace a broken ramrod with something whittled from a tree branch or other piece of wood. No brass ends, basically just a stick.