I received a number of Jihnao X750 as gifts and all came with medium nibs that produce too fat of a line for my left-handed scrawl, leaving open loops closed when writing script/ I ordered abd waited for a Jinhao .38 fine nib and it is OK. But I got some Wing Sun fine nibs and find them scratchier, but leaving open loops and finer lines. How might I change -- without a lot of cost - my 7 Jinhao Medium nibs to fine. buying nibs from Goulet, etc. would cost more per item than the pens cost in lots of 5 and my budget is retired miniscule. I have never ground a nib but have seen some theoretical methods on You-Tube, own some Arkansas Stone and nib tuning grit. Any suggestions or technique you can share with this naive newbie? Where do I start, when is it finished, what are the steps to create a new tip from the blob that now makes medium lines. THNX