Any idea to avoid ROO twitching in the TO run?

My roo is really critical to steering/rudder. If the speed is too low, rudder is not effective enough and she might just turn about 60deg and head out of runway.

OK. This is with springair wires, so putting stiffer legs might help, but I have read, that even with those it might do that. This is in pavement, not on grass.

I think, that I have the same situation as AMTdude mentioned. Well I have a AMT Mercury in it...

BR,
Jussi