GordonT said:(Bracknell - I used to get some sponsorship from Autocross back in the day)
Out of interest, do you know what he replaced the studs/bolts with material-wise?
Afraid I don't, but he knew the issue straight away on the phone which was reassuring.
Loved the fact he allowed me to drive onto the ramp, then talked me through everything on her car (pre-covid) that you never get to see.
Rather than Porsche replace the PDK sump due to a sweat, he cleaned it, tweaked it up & rechecked a few weeks later for free vs OPC costs.
Not sure if I can drop in a garage name, but will happily share / pm as required if any interest for locals.
Clearly an engineer vs a plug in diagnostic & replace until fault goes type of guy, a lot of nice cars go through his garage.