I'm using the JR344 set of TI Jazz Rounds (43-89). I really like the sound and feel of these strings, but I would like to have a heavier gauge. This series of strings only comes in one gauge for four, five and six string basses. Could I buy the five string set and just use the four heaviest strings? That would give me a 51 - 118 set. Could I use a string that was intended to be used as a B as a E? Has anyone hear done this and what were the results? I emailed TI, but I have not heard back from them yet. Thanks for any and all help!