@mattmee
How old is the frame?
I remember on a previous thread discussing the Titus brand and how it has a lifetime warranty compared to a px 3 year warranty for their ti frames.
All Planet X, On One Viner and Holdsworth bikes carry a 3 year warranty as standard for the original owner. Titus titanium bike frames from 2021 onwards carry a lifetime warranty as standard for the original owner. All other branded goods carry the full manufacturer’s warranty, which may vary in duration but will be a minimum of 1 year. Planet X cover frames for paint defects up to 1 year after purchase.
https://www.planetx.co.uk/pages/warranty
And I think it was @scotroutes that said something like “not all lifetime warranties are equal”
The alpkit warranty on ti frames is 10 years and the general consensus was to buy alpkit for the very reason your having now.
Px are great until things go wrong. As above, no matter the promises, it’s always the same.
Keep the thread updated on your customer journey. Good luck.