Marcy, I love using Rodinal 1:100 with both Neopan 400 and T-Max 100. Try 20 minutes at 70 degrees, agitation for the first two minutes and then 5 seconds every minute.(posted 8222 days ago)For T-Max, I use an EI of 75, and for Neopan 400 an EI of 320 when using the Rodinal.
chris