Again, I defer to the Master.

I once bought a stock bow with bad finish… the bowyer had quit building but kept me advised on sanding it down…and admonishing me to use very fine grit and light strokes to just remove the surface finish…

From that limited experience, and one other, I deduced tiller was easier to change…

Ergo, my cautionary note. Then again, when I undertake such projects, I tend to get after it like gangbusters…so ignore my admonishments and enjoy your project and go with Ralph’s input!