Commencement of service 4 via The Baldwin to Solihull?

[Busmapper]

I have recently written a Wiki article on the history of the Stratford Road bus corridor but am unsure of a few dates.

Does anyone know when service 4 started running via The Baldwin and through to Solihull?

Was Gospel Lane loop service 32 withdrawn immediately post de-regulation and was it replaced straight away by service 41?
When did new service 32 commence between (Yardley Swan,) Acocks Green and Gospel Oak and when was this extended (daytimes) to Shirley?

When did Blythe Valley sevice 166 commence?