Thanks folks.
I've raced quite a bit then tracked cars here and there for the past 20 years. So I must be good with overall prep and not trying to become the Cobra champion on track. I'm too old for that and know where my place is
The other post has a myriad of clues. Like play in the rear suspension that seems to buildup and needs to be checked before each session.
Thanks a bunch, I'll post my mods on the forum !