As mentioned under general Bridges thread the standard F style Bass Bridge that comes with kits has quite a small footprint which does not provide much room for getting correct intonation. I discovered this by swapping up from a set of light strings to a slightly thicker gauge and ran out of forward bridge saddle movement on the G string and possibly rear movement on the low E too.
Why? Thicker strings need to move in a different direction than thinner strings by changing string length to achieve proper intonation.
As I always try to stick within a sensible budget usually look around trying to find something better that doesn't cost more than the whole guitar or bass.....
https://www.realparts.com.au/bridges...rome-3207.html
This is basically a clone of a more expensive Gotoh that sells for $59. Best $29 plus postage I have spent. Here is a link to that page within the build diary with photos posted below.... http://www.buildyourownguitar.com.au...t=4813&page=13
This is the most played Bass in my collection and the better designed bridge has made a huge difference. Being a guitarist who switched across to Bass many years ago I still use a pick and sometimes like to palm mute the strings at the bridge too, just as you would on a guitar and this bridge allows you to do that. Also do a bit of finger style and need to spend more time practising and developing a better slap technique too.
I highly recommend this bridge as an affordable and reliable upgrade.....it is that good that I almost bought one for the MMB4 but wanted to try stock kit unit first and thankfully it seems to be doing quite a good job for now.
Cheers, Waz