For years I've had a 1.75" dump tube that was previously a recirc that I lopped off the down pipe. Pretty janky. Recently purchased a private label manufacturing 44mm 45 deg dump tube for my tial mvr gate. Only problem is the flange is nearly a millimeter thinner on the plm tube, and it just spins and slops around when the clamp is tightened.

What am I missing here? This tube is sold for a 44mm mvr gate, and from what i see, vband clamps and flanges dont vary in depth, and can't be purchased in different options. I reached out to private label manufacturing and they said they'd call me back. See attachments, any help is appreciated, thanks.

https://privatelabelmfg.com/products...caAv7LEALw_wcB

 

The inset lip on the plm pipe implies it's to be used with a fire ring. Same part thats inserted in the bottom of the wastegate