roseblood,
1) I wonder if you are wearing your belt tight enough??? I noticed when I started carrying that not only did my more flexible belts not work well (I moved to using my stiffest belt and am planning on buying an actual gun belt) but also noticed that my belt needs to be a bit tighter than normal... I usually find that when I first get dressed in the morning I put my belt on at the normal "notch" for what's comfortable and a few minutes later I have to hitch my pants up slightly and cinch my belt one more notch. I'm not sure if this is your problem with the pants sliding down but it seems like it might be worth a try.
2) I had a similar issue and found that it was greatly relieve by not carrying my firearm too far forward or back. When you carry it too far back it seems to cause a feeling similar to what you describe (at least for my body frame, but I have some fairly serious alignment issues with my spine already so you may find it to be different for you). Too far forward seemed to cause me to not be able to sit squarely up-right b/c the gun dug into my stomach and thigh. Depending on your observation and where you are carrying (fore vs. aft) you may want to try scooting slightly more towards your 90. I also found adjusting the 'cant' helped a lot. It seemed that adjusting it to max forward cant was nearly as bad as max rear cant. Just slightly forward of centered-cant seems best.
These are just ideas.
I'm also a guy with love-handles. Skinny guys seem to have totally different issues, so if you are skinny maybe none of this would apply to you. OTOH, if you ARE a guy with love-handles, I had a post a while back where I got some GREAT feedback on adjusting for more comfort... just search for "love handles" and you should find it.
1) I wonder if you are wearing your belt tight enough??? I noticed when I started carrying that not only did my more flexible belts not work well (I moved to using my stiffest belt and am planning on buying an actual gun belt) but also noticed that my belt needs to be a bit tighter than normal... I usually find that when I first get dressed in the morning I put my belt on at the normal "notch" for what's comfortable and a few minutes later I have to hitch my pants up slightly and cinch my belt one more notch. I'm not sure if this is your problem with the pants sliding down but it seems like it might be worth a try.
2) I had a similar issue and found that it was greatly relieve by not carrying my firearm too far forward or back. When you carry it too far back it seems to cause a feeling similar to what you describe (at least for my body frame, but I have some fairly serious alignment issues with my spine already so you may find it to be different for you). Too far forward seemed to cause me to not be able to sit squarely up-right b/c the gun dug into my stomach and thigh. Depending on your observation and where you are carrying (fore vs. aft) you may want to try scooting slightly more towards your 90. I also found adjusting the 'cant' helped a lot. It seemed that adjusting it to max forward cant was nearly as bad as max rear cant. Just slightly forward of centered-cant seems best.
These are just ideas.
I'm also a guy with love-handles. Skinny guys seem to have totally different issues, so if you are skinny maybe none of this would apply to you. OTOH, if you ARE a guy with love-handles, I had a post a while back where I got some GREAT feedback on adjusting for more comfort... just search for "love handles" and you should find it.