I've got a pair of Alpinestars leather pants (I think they are Track but could be Missiles) and the right knee particularly is a bit low, especially when standing and walking (the top of the knee guard sits just below my knee cap). Is this how it is supposed to be? When on the bike, I can pull the legs up a fraction so it sits ok on my knees but if I came off I'm a little concerned that it won't stay where it should be. Is there any way to adjust the position of these guards? I've had a quick look and can't find any zips or Velcro to access the inners of the pants.