I'm considering buying a 2005 KX 125 for my daughter to ride in hare scrambles and woods events. I sold the RM100 she had long out grew (he is every bit of 5"8" and maybe 105lbs. I had installed a 10 ounce flywheel weight in the RM but that's the only modification besides some handlebar risers I did. Anyone out there have any experience trying to make a 125 more adaptable for woods riding? I already have a hybrid I built using an 05 Kx frame and an 03 KDX220r motor but I'm not really ready to give it up and I was hoping I could use the 125 motor and maybe hold the weight down?