TF Tuned always.
Used them for years on multiple forks and shocks and never had an issue. Earlier this year I did have an issue…
Had my Fox Float X2 fully serviced by them. 4 months later on a ride the shock gave a huge bang. Jumped off to discover it was collapsed fully into its travel and stuck down. There was also a crack on the shock body.
Called TF who were full of apologies and asked me to send it to them. Their first port of call was Fox for a warranty attempt. I was a month past the official Fox warranty period but they weren’t interested.
TF called and explained then offered to repair it for me with no charge for labour just the parts needed which seemed fair.
About 15 minutes later they called back to say they’d opened up the shock and discovered when it was serviced they hadn’t put enough threadlock on a part and that’s what caused the failure. Admitted it was entirely their fault and repaired it completely free of charge.
Mistakes do happen, but the fact they stood up and admitted their mistake is some of the best customer service I’ve ever experienced and I’ll continue to use them for as long as I ever need suspension serviced.