Incomplete regen and turbo delay cm871

[Big red 09]

The truck has 1.2 million The shop claimed the Doc was ok but was cleaned
It has been about year and a half since last egr clean up so was suspecting I should do that again This is an 09 T660 and has been inframed new head cams injectors oil pump both fuel pumps These repairs weren’t all done at once but have been done since just shy of a million
Been a good motor but now having some regen issues