T400CN is not the first choice when printing on classical B&W paper. This film is designed for the minilab for printing (neutral B&W prints) on RA-4 color paper.
If you want to use chromogene B&W film and print on classical B&W paper, use the Ilford XP2 super, best on iso 250 and normally C41 development.
Use the right Split Grade settings on the Heiland and your results will be fine.

Nevertheless a classical B&W film is in my opinion better than these mentioned options. Correct B&W development is more difficult than the standard C41. In fact you need to optimize your development. Even Split Grade from Heiland can not fix a lousy negative which needs grade 0,5 or 4,5.

I wish you the best results in your darkroom.

Best regards,