As ive read with ziatype and Pt/Pd humidity plays a big role in the contrast of the final print. Im curious if the same is true for van dykes. Mine have been coming out rather flat and while its mostly the negs im wondering if steaming the paper could help. Printing on arches platine, double coating, and ive recently bought some potasium dichromate though ive not used it yet. Would steaming make a difference?