What do you need in terms of safety when working with electricity and electronics.or just always disconnect the power source??or maybe even gloves that are thin/flexible that prevent an exacto knife from penetrating them?
Yes, they do make difference. I live in Calgary, Alberta, so we get quite a bit of snow here as well as a lot of freeze-thaw cycles that can make the roads very icy. I have winter tires on my mazda 3 and I have not had any problems yet. Studded tires are not necessary, and since they wear out the roads, I believe they are not allowed in many places. Chains, too, are not really used in the city here at all, but they are sometimes recommended for travelling in the mountains. I have Nokian Hakkapeliitta RSis and I've been really happy with them so far.
All you need is a plastic reducing washer. 1 1/2 x 1/14.
Maybe the batteries are dying. It happens to me all the time. If the batteries are low, it will beep and that lets me know I gots ta change 'em.
Warm dust. Happens to me all the time.