Hi. I put a set of Roto 77 45-105 on my Fender Jazz bass tonight. I had been using chromes and wanted something a little more midrangy. I don't know if the Rotos were a good choice or not for that purpose. My initial reaction is not too favorable. The Rotos sound mid-rangy almost to the point of claustrophobic, without much high end or much fundamental either. Obviously they are brand new strings and need a break in period. What would be a fair amount of time to give them? What changes can I expect to hear as they wear in? I play about two hours on a typical day. I'm thinking of putting the chromes back on the Jazz and moving the rotos to the P, which currently has rounds. Any preferences for P or J with this particular string?