About 5 months ago I replaced my starter in my Blazer . As time went on it started getting harder to turn over . During a cold snap it started really slowing down and just stayed on after letting go of the key . Well it started smoking and took me awhile to disconnect the batteries . It was fried so I took it back to Napa and got another starter and at first it worked great and now it's slowing down as well . I have new batteries , a new alt. and new positive cable to the starter . I hate to pull it and get the same starter and keep doing this till I find a good one . Am I just unlucky or is there a Napa starter better than the other ???