It happens to me occasionally that the uni twists to one side and
there's been a few posts from others on it too.
Usually it occurs after a change of tyre or seat height and goes away of
it's own accord by the next day.
I've never ridden 170's but would imagine that they could exagurate a
tendency to twist.
--
onewheeldave - Semi Skilled Unicyclist
"He's also been known to indulge in a spot of flame juggling - but it's
the Muni that really fires him up."
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