If the ends are truly bunched, time will not make them become 'less bunched' or smoother or thinner.
They will continue to lock up 'as-is' leading to what we call 'fat ends' syndrome.
Sisterlocks should generally be one size from root to tip. In the case of bunched locks with 'fat ends', you have a slim loc from the root and a big head/big butt/big foot at the ends.
The problem with this is that the big bunched section can be painful and even impossible to push through the narrow base at the root of the slim loc during retightening.
Every time you do so, you'll be placing unnecessary stress on your follicles and could even accidentally be popping some of your hair out at the root. This is why we try to avoid bunching or consistently repair (as and when appropriate). NB: bunching tends to be less of an issue with palm rolled locs as there is no need to pass the ends through the loc base.
In this picture you can see the loc has curled back up on itself. This type of bunching is fairly easy to resolve (as long as the hair hasn't locked itself in this position).
Located the centre of the coiled loop and very carefully insert the end of a rattail comb into this epicentre - and gently pull downwards. This should free the loop from the surrounding hair and allow the loc to hang straight again. In most cases you can do this with your fingers. (See next pic)
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