My friend has broken (shattered) the 10 spline coupler sleeve that goes between his SM465 tranny and 205 T-case twice. He broke it first in March, the truck sat, then replaced it in late May, only to have the brand new just-installed sleeve shatter 3 days after. I would think a U-joint or something else would break before shattering a second coupler sleeve. What's the deal? Could it just be his "curse" that we say he has? Or is it possible the new sleeve was weak or defective?