hi i have strange problem adjusting dual truss rod on my yamaha trb jp bought 6 month ago and first day make change from roundwound to flatwound rotosound before on my old bass when i replace round to flat string, need just a 1/4 turn on each truss rod and everything was fine but on trb jp after 8 whole tour was enough to get right relief so i release all 2 truss road to a minimum and make quarter turn every half hour and make relief good but not perfect problem is next: If i setup both truss rod on 4 full laps, on bass side i have a good relief, but on the treble side is too much If I reduce for 2 full rounds treble side off relief is not perfect good, but the c string is too close to the first fret? After I lifted string on bridge about 1 inch seems ok but it is simply too much for normal play I tried to lower treble truss rod until I came to a minimum but still not enough when i press 24 fret on c string, string also touching first fret c string is too close to 1 fret ***? 2 truss rod : one is on 4 rounds and 2. is on 0 and still not enough with this setup relief is almost good??? it is simply impossible to make a harmonic slide because when i make little pressure on c string like when you play harmonic, string is touching the 1 fret the G string is in little better situation and the other looks all ok ps If the dual truss road are parallel its setup a equally If they are in v position, treble side setup a normal and bass side just a little to assist him in my case is not good neither what to do???