For RMS try to group the numbers into groups of 6. I mean, remember 6 then move on and build another 6. This way I find I get an average of 5-6 each test.
For ROT, as mentioned earlier in this thread, a good tip is; rather than thinking of a red cross on the cube try to imagine a pencil sticking out of the cube instead! This also works for me.
The above "tips" work for me they may not work for you but you can give them ago!
Good luck
