Didn’t replace any for that I rely on a luthier. I had some some fret buzzing on the A and G strings at a few frets when the action was at medium height.. First had to check that it wasn’t fret(s) unseating or rising away from the fret board using a feeler gauge. This wasn’t the issue. I knew from playing I had an issue with high frets in four spots but check all of them using a fret rocker and there were more. From there I used a StewMac fret kisser to level the high frets, then crowned and polished them. (All my other current tools are Music Nomad stuff). It’s really pretty straight forward. While MN has a series of youtube videos on this, I like this one by StewMac:
In hindsight I bought this particular Bass as B stock for $279, with the cost of the tools I got have easily just have bought a regular new model since currently they’re on sale for only $350 
But in any case it plays with nice low-medium action now and I have the tools for life should I ever need them going forward.