Conversation so far:
Who founded Ratt?
founded by singer Stephen Pearcy with a few friends.
Who are the other members?
Guitarist Robbin Crosby in those same years had been a member of the bands Metropolis with Tommy Asakawa and.
Any other members of note?
and Parramore McCarty, Xcalibur, Phenomenon, Secret Service and Mac Meda with Askawa.

Question: Did any members join or leave during this time?
Self-contained rewrite: Did any members join or leave Ratt during the time period 1973 - 1982?