My procedure for ECN: Never had any issue with remjet leftover crumbs or bits on the film. Some remjet will be removed during the presoak, and the remainder will come out with the developer.

All procedures at 98 deg F, and using distilled water for Rinse. Tap water for final washing.

Presoak the film for 2 minutes with agitation every 30 sec. then dump.
Develop
Rinse 4 times of 30 seconds each with continuous agitation.
Blix.
Wash.