I was originally going to change my plastic magura brake levers to metal ones. Well, I also wanted to upgrade my shimano deore shifters to XTR. They are not much more expensive with the levers! My question is the ones I have found online say for long pull v brakes! I have Magura clara disks! Will these fit on disks brakes? If not where can I find XTR shifters with levers to fit disks??