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I've just put some new pads into my hope m4's. one pad has even wear but the opposite pad is a lot more worn and has also got uneven wear to one side.
when I fitted them I had to push the callipers back in with a screwdriver.
now the new pads are in one pad had play in it (I can wiggle it) but the other seems very tight.
the brakes work fine & I cant hear any binding.
do you think I need new seals?
It's uneven piston movement. I'd start from scratch by cleaning the pistons and making sure that they're all free to move (first paragraph [url= http://steveukmtb.wordpress.com/hope-caliper-overhaul-minitrialsm4v2m6/ ]here[/url]). Then make sure that the caliper is perfectly aligned and that the pistons/pads get properly centered ([url= http://www.hopetech.com/page.aspx?itemID=SPG219 ]vids[/url] on Hope website). If pistons are still not functioning, you'll need to check for air in the line and then consider a seal change.
It's best practice to properly clean pistons and caliper interiors before pushing pistons back in to fit new pads - saves a load of crap and brake dust being forced back between the seal and the piston and caliper bore.