whats up, i am new to my 76 ski doo and know nothing about them. last summer i got this one for free and had it running for the most part (some fuel delivery issue), but now that the snow is falling she again doesnt run. now the issue is a no spark. i was told that the kill swithch is the first thing to check, it was a broken, but i think it still functioned, so i grounded both sides and still nothing. i replaced the plug wires, and cleaned the tips of the mags, but i have no idea where to go from here. please help me, i wanna use this thiing this year.