Okay, great. Thanks both.
And yeah, @aniki feels like a decent bit of kit so I'd be more tempted to blame a very slightly off-gauge seatpost.
Cool; I actually bought two of the control tech timania clamps because I love how they look and the design allows for immense clamping force. On the downside they were about £60 each!!
@szeliaxe started
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Okay, great. Thanks both.
And yeah, @aniki feels like a decent bit of kit so I'd be more tempted to blame a very slightly off-gauge seatpost.