whats the trick with knee pads, boots, and pants

Guys everytime I go riding my legs end up with out the full range of motion..

I have on fly pants with the knee guards under then my boots gerinelli (spelling?) on top of the pants/ knee guards and I pull and tug at the pants so I have slack to bend and extend my legs...heres the problem when I ride that slack seems to go away, like the pants get sucked back down into the boots, it very un-nerving as I cant move my legs around freely.

the knee guards have the shin piece on them and I don't feel it is nesesary as most of it is covered by the boots anyhow and it makes things really uncomortable in there.

untill I can find some over the boot pants on sale (and have the money) is there anything I can do??

are there any guards availible that have only the knee section? I'm tempted to cut the shin plastic off!! I don't understand why that shin piece would be there in the first place.

My problem is the pants tighten up when seated and when i go to put out my leg in a turn or to catch my self I can't extend my leg ..I don't know something is binding!!

I want over the boot pants because they seem to keep the water out of the boots better and it will solve my binding issues

hey never mind I found evs glider knee pads they look real comfy!!