I've got a Maxum 17XR with a 70 Hp Force outboard motor, I've just change the fuel pump housing due to corrosian, also I fitted a new prime bulb and hose, change the jets and needle valve and reset the float height, flush the fuel tank out, and check tank breather was clear, The engine was running sweet but now the prime bulb as gone soft and I am losing power, I've change the prime bulb and checked for air leaks but have found none present. Can anyone help me on this one as its doing my nut in. 