TanTan'd again.  My fifth TanTan build, my seventh frame in total (sold two new unbuilt) since 2018.  Four frames have had issues - not minor ones either, including one cracked frame. 

This one takes the cake.  I should have learned my lesson with this china crap and bought a name brand to replace my cracked Borealis crestone but I figured I'd roll the dice since I badly wanted a frame to accept a 5.05" rear tire.

Well, my seraph cs197 fat bike frame brake mount out of spec.  The hole pattern is 27mm on center where the standard is 34mm. 

Throwing this out there.

Good luck to you all, in your builds, I am absolutely done with dealing with TanTan for any frame needs - after they fix my issue.  Any money I "saved" by going cheap on a chiner frame+fork+paint vs just getting something "name brand" even if it was made in china, is now out the window in lost hours of specifying, ordering, and assembling and dealing with issues.  There's a definate lack of QC/QA over at TanTan and it shows.  It's been that way for me since 2018.  Highly recommend you pass.  You might get lucky with your sample, but for me, 50+% of the time, you'll come up snake eyes.

Don't bother with pro-mance, they're no longer doing individual sales

I have a Pro-mance M7007-II Boost FS 29er T800, love it.  Inquired about a frame for a new build, Steve @ Pro-Mance said they're sold out till october 2021 and no longer taking small single sale orders.