This worm gear was running 245 degF, at the pair of tapered bearings, normally below 180. We split to look inside, one spall spot on radial bearing drive end of worm, hard to see the tapered bearings. My question at moment is the wear at lead in on the worm, and none opposite? This is located by the tapered bearings stopped by housing wall and can not move to drive end without shimming bearing by shaft shoulder. Shouldn't the wear be more centered on worm, as most are?