C'mon C.W. was so out of it during the 1985 sessions that he once fell off his drum stool...
K.R. told him sth like "hey you're playing MY part, pal".
It's pretty a well-known thing that the recording sessions for "Dirty Work" were like an episode of E.R. : EVERYTHING was tried to keep the patient (i.e.the album) alive like bringing in side-men (Jimmy Page Steve Jordan & others).
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www.warr.org]
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en.wikipedia.org])
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en.wikipedia.org]
Quote from Wiki :
"in 1993 [C.W.] was addicted to heroin as well as alcohol during the 1980s, and this is why replacement drummers are credited on both Undercover and Dirty Work"