I've got a few string related questions here; First off i've replaced the standard strings (45,65,85,105) on my Ibanez GSR190 Bass with Rotosound Jazz 77 flatwounds (50,75,95,110). There fine apart from the problem pictured below which show that the to get the correct intonation the 4th string i've had to screw the saddle so far back that the taper of the string is almost sitting on the saddle. Why only this string and why much for a .005 difference in gauge!? Should the fretted 12th be played harmonic? Apparently my bass is a 34' scale but from nut to bridge its about 35.5. I want to replace these strings with some roundwounds (55,65,95,120) as I like to play in drop D and sometimes C. So taking into account the current problem what should I go for? I thought maybe D'Addarios as thats what Ibanez use.