Clark W. Griswold
Join Date: Mar 2014
Location: ,location, location
Posts: 13,493
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
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I would take it to your local frame builder or frame repair shop if you have one and if not check with the head tech at the local bike shop or maybe the person who has been there the longest.
It might be nothing or it might be something and guesstimating is not a good idea. Certainly you can post plenty of good clear pictures with some measurable items (like a common coin or measurement device) and people can take a look but at this point we are just guessing.