Q: What is the difference between the 28U and 42U strings? I have a tenor size 26 inch banjolele and my A string just snapped. Not sure what to buy, do all 4 uke sizes use 17" strings? I've only had this a few months and it came with Aquila strings, new. I don't think I need to replace the other 3 since they were only a few months old??