Originally Posted by
cxwrench
You mean 'something' like a tap that's sole purpose is to clean up threads?
No, not in light of all the other mis-steps the OP has already done. Taps, even those made just to clean up threads are more easily started wrong and can make a bigger mess of things when in the hands of someone not able to tell when they are doing it wrong. And if bought by mistake, taps for cutting new threads might just break and get jammed in the hole if the OP isn't familiar with using them properly.
But I guess if the OP needs to pay the tuition to DIY school, this is as good as any to incur those fees.