i went shoot shoot today at midvalley
less than 100 shots continously with flash (fashion show), my f58am overheated
I was like huh... then I think a bit, the only difference this time I was using a chapalang stofen bounce (that square diffuser). Then.... ok... I removed it.

100 shots, no overheat
then 200 shots, no overheat
then another 200 shots, no overheat

lesson learn today, chapalang stofen can store at home!