Hey I am getting serious about playing Queens of the Stone Age covers and composing originals in C standard tuning. (C,F,A#,D#). I recently bought single strings from a music store and if need be I could trade strings cuz I bought singles for custom gauges. I bought a .110 for the C, a .90 for the F, a .75 for the A# and a .55 for the D#. Thanks a lot and I really appreciate the help. P.S: Would I need any truss-rod,bridge,and nut adjustments, cuz they are very thick gauges for a very low-tuned Fender P-Bass.