I need help understanding how to improve my first (successful) Tri-X reversal process test, please. I'm a bit hazy on how to think about the dev/exposure relationships within reversal processing. Process: I have run a test film strip of exposures on 35mm with 200ASA as the base and EVs of +1, 0 - 1. The film was dev'd in strong Rodinal of 1:15 at 10 mins according to helpful suggestions from poster Tofek. The rest of the process was as the Foma Reversal Kit suggests. I reduced the Potassium Permanganate by 40% to help save the Tri-X emulsion from going too soft. (I am using the Foma kit to get started). I cannot scan today but have photographed these on a light box. I think you can see the gist of the results. I can post close-up of each frame if needed. I'm very happy and excited that I got a reasonable result but want to address the weaknesses of the process. What I am seeing is weak blacks and grey-looking hi-lights. An overall flatness. The -1 EV frame has the strongest contrast. Questions: I'm guessing the exposure is OK - at least at EV 0 or -1. Is that right? The EV+1 seems to have no greys in the upper range. Can adjusting the dev time improve the image and contrast? And if so which way? Or do I just need to use a more vigorous, high contrast developer like Ilford PQ, for example. I guess I'm getting low contrast by using the TriX. Is there another factor, I'm missing? NB: I may switch to D94 and mixing my own chems in the long run but at the moment I'd like to try and get what i have working to it's best advantage, if possible. I have Rodinal and Ilford PQ.