Reviving a dead thread because I recently acquired some experience with Ran Guitars:
In short: several dead spots and weird uncontrollable harmonics. Model was the Crusher 6 string.
Yes, tried with three different string gauges, brands and tunings, adjusted the truss rod and intonation. Nothing helped.
I warmly suggest everyone of you Ran owners take your instrument and sit down for about 5 minutes as you play through all frets with all strings and see how long each note sustains. Shouldn't take too long. Really, just do it!
Same goes for Mayones owners (see my previous post about my Regius).
Administered the same test for 12 other Mayones guitars and all of them had same problems. Fun.
Some dead spots/lack of sustain can be caused if the builder doesn't glue in the frets but relies on the barbs on the tangs to hold them in.
You can get a bad junction between fret and board and energy is lost when you hold down the string.
It can often be cured quite simply:–
You will want to put some paste wax on the wood along the side of the fret you are about to glue in to stop the glue sticking where you don't want it to - I use beeswax/furniture wax and a Q Tip to smear it on
Then use low viscosity/runny superglue and run a little down the edge of the fret and it should "wick" under the fret if there is no glue there and solidify the fret in place. The wax should prevent the glue sticking to the board.
Wipe it clean and let it set .
Not that we often clamp the fret down with a fret press when we do this to ensure it solidifies in place snug to the board.
I have had a few guitars that came back to life after this treatment.