Bill;(posted 9020 days ago)I set my gralab for 1 minute and 15 seconds. When the second hand hits zero, I start the pour into a 16 oz tank tilted to allow the fastest pour. I agitate for 5 seconds when the hand hits 30 seconds. When the time hits zero and stops, I dump the "B" solution and immediately rinse with water, for about 15 seconds, then dump the water. Then I pour in rapid fix. I usually monitor the temperature of my darkroom and assume that the developer and fixer are at the same temperature. I get the rinse water close to that temperature.
I got tired of getting varying results with other developers. I used technidol for a while then standardized on Ethol TEC for the last 9 years or so. TEC is diluted 30:1 for tech pan and I used a syringe to accurately measure the small amount of stock. I always worried when pulling the reels for the first look as to whether the development would be right. About a year ago, some one on photo.net clued me on to Diafine and the 60 second "B" development time for tech pan. If you go to 1 1/2 minutes in "B", the contrast starts to build.
I've developed enough 35mm tech pan in Diafine at this point to have confidence in the results. I have zeroed in on an E.I of 80 that I use with my MF nikons.