I removed the inner baffle on mine which made the muffler thinner and thus leak at the port (spring is only in the rear), I ran it that way for a little over a gallon until I got tired of the mess, then cut some scrap aluminum sheet pieces and bent them to go under the wire in the front. There's a notch in the muffler that keeps the spring in place, it can be wobbly and partially fall out of the port and still stay in place...