Mr. Whacky: Thanks, at least I know that someone else isn't having problems with the game.
Have realised a neighbour has just got a Wii so trying the game out on theirs is a sensible option.
Goan: it's happening on 2 controller/nunchuk's so loose connnection unlikely.
Since posting this, have read on-line instructions regarding infra red interference ( fire on, sunshine through windows ) currently grey here so that's the sunlight sorted!
But…we have tinsel around the tv in fit of festiveness, and realised the tinsel might be encroaching ( just ) on the ends of the sensor bar. Have just moved bar forward and pushed away reflective tinsel….. so far so good!
thanks for your thoughts
will keep an eye on it, and scrounge a cuppa over next door's!
cheers
Q