I would like to try this. I have used rufzxp, but can't find how to set it to just 2 letter combos. Thanks
1) Set Mode -> Trainer (must be set first)
2) Go to Mode -> Settings
3) Select "Trainer Mode" to Letters.
4) Set group length to fixed, set at 2.
5) Set number of groups per attempt to 999.
6) Enable timer, and set to desired time (3 minutes is good).
7) Set speed to fixed.
Start a training session. Work the groups. If it is too hard to get, slow down the speed until you get it. Move to 3, 4, then 5 letters. You can also try alternating the speed if you wish. Just change it up so you don't get bored. You can also use the scoreboard to track your progress with those particular settings, but it does not work very well. You have to clear the scoreboard each time you make changes or you will get inconsistent results.