Hi, I wanted to try the La Bella flats, I usually use the Deep Talkin rounds for my Pbass. The rounds just come in different gauges, but the flats in different lengths as well, there is no standard scale, just short, medium, long and extra long. I would have just bought medium, but I know sometimes this is 32", and rotosound class 34" as long and 35-36 extra long. Any ideas as to which is right for my 34" scale precision? Should I just buy long or extra long and cut them down? Thanks, Jack.