Hey guys, I currently roll with a Koral MKM. I love it so far but the pants always seem to come undone and I end up stripping slowly through sparring. I wear an A1 and I'm about 5'6 and 146 so It's hardly too big for me. Any suggestions? Maybe I'm not tying it properly (I use the same loop used to tie my shoes) or do I need to replace the drawstring or something?