So I emailed Rotosound about the string snapping and such, just since I figure they know their strings best and curious what they'd have to say about it. This is the response. I find it weird suggesting not to cut it at all.
It is very rare for more than one string in any set to be faulty. They all have different specs, made at different times on different machines, if you get my drift.
I would very politely advise however, that you should always wind the tail of the string at least 3 times around the machine post before taking up tension. This spreads the load and avoids unwanted shear stress at the hole or slot of the tuner.
Also, you should never ever cut the tails of bass strings because this can cause the windings to relax. Many players will do this if the string is a little on the long side for their particular bass but is very bad practice. You see, the windings lock around the length of the tail and prevents slippage, which can result in loss of tone, ring or unwanted resonance.
Now, I am not suggesting you do these things Ken but mention such as standard procedure, particularly when strings break at the tuner or/and tonal loss and rattles, buzzes etc.
Do please let me know how things progress.