I've converted several of the MS250 saws over from easy start to conventional but have encountered a problem with the latest one. I changed the starter and flywheel with the conventional ones, put it together and get no spark. I'm wondering if this saw takes a different module or if I have one with a defective ignition. I think some of the 250C models have a different module location, like the ms280 but this one is in the standard place to the rear of the flywheel, not above it. I checked the flywheel and it's the right part number and the magnets and locating key are in the same place as the flywheel I took off.