hello i just bought a suzuki gz 250 for a starter bike and i noticed when i move the bike i can hear a grinding sound coming from the front brakes even when im not applying any brakes now when i do apply brakes is sounds like metal on metal obvously i need new pads already on there way but why is the caliper sticking when there isnt any break beeing applyed i checked the fluid level and quilty and there dosnt seem to be anything wrong in that area will the new pads fix these probs and if not what should i do thank you