I have a 1997 Yamaha Kodiak that has sat for 2-3 years, trying to revive the 4 wheeler, The brakes are in poor condition, I have bled the front brakes several times but after building pressure in the brakes the lever goes soft after only a few seconds, I have not looked at the pads yet, figuring that even if the pads were bad the system should hold pressure, do not see any leaks anywhere either, Help????? Brian