I've "adjusted" the clips on several of my carry knives, and in a manner that does not mark them up. After removing the clip,.....i wrap a 4 mil plastic ziplock around it to protect the finish.
I happen to have a few pairs of jeweler's ring sizing plyers lying around

, which are simply used to grip around a ring shank when getting the 2 sides of a ring pulled flush, after cutting out the appropriate amount of gold for sizing,....prior to welding the cut.
That's the "intended" use of these plyers,...............
......But,......these plyers work super when "pinched" against the protected knife clip,.....as the curved surfaces spread the forces out to prevent a clip possibly breaking while adjusting it. (it is tempered, after all).
I suppose careful bending with a pair of flat or needle nosed plyers will work also,......but you have to be careful to spread the bend out a little,......in other words,.....move the plyers a few times while adjusting to spread the bend over 1/4 inch or so.
With the ring sizing plyers it's a 1 plyer job,.......just a little "squeeze' by a single plyer with the curve of the plyer facing the direction you want the clip to go.
..............i'm sure your local jeweler might be willing to help you out also. It only takes a few seconds,.......although i like to go a little at a time and re-attach the clip to see how it feels.
.i think this is much preferred over the sand the scales down method,......as at worse you have to get a new clip,......and if you ever take the clip off the scar under it would bother me!
Not to overstate the obvious, but, have any of you tried just bending the clip up a bit? Most clips will respond to being lifted away from the knife (don't overdo it), and they will work nicely without trashing your pants. I have done this many times-I don't like a hard draw, and I wear jeans a lot (thick material), and the relaxed clip has always solved the problem.