Sorry for the double post, but I found one possible solution.
If you disable reclock's internal frame rate estimator and set it to 29,970 you will get green reclock icon and "NTSC adaptation: media speed changed to 30.000 fps. Audio resampled at 96096 Hz"
Not sure if it's perfect solution but since 29,97 is half of resulting svp frame rate of 59,94 reclock should work ok?