I have been printing on Fuji CA using Fotospeed CKRA4 dev and blix - no stop solution as recommended by Fuji. Timings and temp. as required by Fotospeed's instructions. I use a Nova slot procesor. Some pictures have a very definite blue cast in dark areas. Highlights are fine. Troubleshooting guide suggests blue cast is a result of too low temp. But not all pictures affected. And I tried tweaking the temp/ up a bit with no noticeable change. Can anyone come up with advice. Maybe someone has had this problem and solved it. Any help gratefully received. Thanks Jeff