The problem started when my my 2004 Lazer cut out. I set the brake and started the mower back up. Everytime I released the brake, the mower would cut out. The dealer sold me a brake safety switch. I replaced it and the same thing was happening. I bought a seat safety switch and replaced it. It is still cutting out when I release the brake. If I bounce up and down in the seat, it will work ok. Can somebody tell me about adjusting the spring under the seat? Or does that sound like it could be the problem?