TGC fits based on WW events are sensitive to the W production angle and
to the W decay angles. The newly available O(alpha) MC generators
(RACOONWW and YFSWW) predict distributions of these quantities which are 
significantly different from the ones obtained with lower order generators,
which were used to obtain all the results published so far (KORALW).
Preliminary results show that such a difference in these distributions can
translate in shifts of the TGCs up to the same size of the corresponding
statistical error. The problem is still under investigation and therefore 
we do not release any result for this measurement.