I use the following formula for development of Pyro negs:
750ml Water
250gm sodium thiosulphate
15gm sodium sulphite
10gm sodium metaborate (kodalk)
make up to 1 litre
I use this undiluted and fix for 5 minutes, it will do about around 20 rolls. I never use an acid stop with Pyro, or and developer come to that, just a water rinse, changing the water around five times.
Not hard to do, i mix up some 20c water in a bucket and dip in the measure for the rinse. Takes a bit longer, but no hassle really.