I wasn't saying he didn't know what he was doing.I guess from my perspective & having worked in a LHS, it's given me the added benefit of driving nearly every type of car on the mainstream market which forced me to be very open minded on how every car was different.
I'm probably one of the few guys at my local track that can ask anyone for a burn of their car on the track & they quite happily hand me the tx & say go hard.
Naturally I do,

, & pull some pretty impressive laps (compared to them) with a car that's set up totally different to all mine. Although, the majority of the time I'm usually asked to drive a car to "see what I thought" of their set up & offer advice to correct any problems.
Please bare in mind, I know I'm not the best driver around & I will never say I am or that I know everything, I'm just very adaptive to situations & also make observations purely from curiosity of a persons individual set up.
Off on a tangent, my mate asked me to try his MBX5T with a MR Ninja 21 to help him iron out some handling issues before the racing started. I took it out completed two laps to get a feel & then I started going hard with it & another friend that always beats me in truggy class realised I was driving it & tried to catch me.
He came up to me later on & said "I was trying my hardest to catch you & I couldn't." I felt like it wasn't fast at all, but, a few people saw me drive & said it was very fast.
Do you guy's get that feeling too? I mean, you think you're slow, but, you're pulling blistering times. Well, that was the night I collapsed at the track from blood clots in my lungs & haven't driven a nitro car since. Another reason why I'm going brushless, no smoking!!