No, basically just double checking that the fret wire sits tight at the edges and the center has some clearance underneath. The pre-cut pieces aren't too easy to be rebent properly which is why I prefer longer pieces. Then again, calculating the right amount of wire cut to five inch pieces can be challenging (don't ask...) as the combined amount should suffice but you can't join the leftover pieces to fill the last empty slot. The 1 kg roll I bought years ago was basically a good deal but I should've taken the wider wire - nothing wrong with the 'vintage style' narrow plus you get a longer stretch for the same price. But the difference wasn't that big and would have suited the fellow builders better. Looks like Madinter doesn't sell rolls any longer, then again the 610 mm lengths are pretty nice, two should suffice for one guitar. Maderas Barber has the 1 kg rolls in stock, 30-40 guitars from one single roll...