I've got a 4-string that is set up nut-wise for medium gauge strings. Could I use Fender 7250-5L strings without adjusting the nut? The gauges on the 7250-5L's are 40-60-80-100-115, and I'm using 45-65-85-105's. Could I use these strings, and how would it sound? I'd rather have higher gauge strings, but I'd rather not adjust the nut. How would a 115 B-string sound?