An increase in contrast from 0.5 to 0.6 would do the trick gaining about 0.15 log E (1/2 stop) in the mid scale. If this were to be done with all 3 curves changing by the same amount, then it would make fine prints on Endura with some color errors due to the change in the spectral curves of the dyes. As noted above, you would have to be careful about halation, and thinking about it, also about static. The rem-jet is also the antistat layer in ECN.