Just checking up, now that im getting to giving the new "to me" 93 moto4 350 2wd a tune up. Are there any weak points to really keep an eye on for failure? Never had a shaft driven quad before. On a side note, my yamaha came with a plow which i fully plan to use this winter, are there any dos and donts for plows with this quad? gears to avoid? etc? obviously letting your bike warm up etc.