Update on my used Indo CV50P.
After polish all fret wire, only found few little wear signed on few frets. Not serious actually.
Plug all those miss pre-drilling bridge hole, clean the bridge and install it.
Put the neck back and check no level problem after tight up.
Glue a piece of paper on the nut bottom then sand it until it has enough thickness for me to do nut file process especially the A nut slot.
LTF4A reload and neck relief/ action setup.
The final is nut slot file and intonation process.
Now the bass play quite well with my personal action prefer setup.
1.75mm E to 1.4mm G. Neck relief.010.
All the note ring well except notable dead spot C on G string and 2 second sustain A on E string. Clip on my custom modified clip on end of headstock able increase that A note sustain longer until 4 second before fade.
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There are 2 high fret on second and 5th fret wire cause fret buzz , fix by my master who always give me lot input and knowledge on bass repair and inspect.
Plug in to amp, this CV50P has better note definition on E string compare to others 3 I been own. Just surprised. All previous Indo CV50P also using LTF4A, but this one notable sound better. I suspect the weight on body make she sound superior. Or, the well aged LTF4A has magic on tone ?
She weight this...... Shocking , right?
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The neck are weight only 1.17kg, but the body are tank !!!! The neck hard to get dive.
Above are my honest person share base from my skill and knowledge. Thanks for reading.