im running atr ext DP and TA ss race headers with no issues , and a cottons external with the mild TA race headers also no fitment issues
dont recall even being close to contact on install on either of those
its possible the header needs to be adjusted by loosening bolts on the head and rotated up or down , or maybe twist the turbo a little
any pics of where the problem is ?
really you should be on the phone to Nick and get his advice first.. mine are older sets ... maybe on your newer set being a different batch your passenger side header tube is a little off compared to the old ones ???