By Wally Pyrah WEATHER and track conditions should be perfect when racing gets underway with a nine-race card at Happy Valley in Hong Kong today. With little or no rain since last weekend and temperatures just below 30 degrees, you can guarantee the surface at the inner-city track will ride on the quicker side of good. That, of course, will cause plenty of head scratching from form book students, who have read the form on soft or yielding surfaces in the past couple of months. One statistic that hasn’t changed since the beginning of the year is the continued track bias in favour of gallopers w…