Have a 48cc kit and ran fine for about 10 hours. Now wont start after last couple of hours of hard to start spells seemed like it got progressively worse. Got a very minimal spark with plug out of hole and resting on fins. Probably not getting any spark under compression. Found a post with ohms readings to test mag and cdi. Mag tests good cdi open on 2 of 3 readings. Do these cdi open up frequently? Heard shorting out with kits kill switch is a bad idea. Talk to me, what do you guy's think?