Who else can't play guitar, in a shop?

Just for context, I'm a 66 year old musician, first guitar 1972, I'm currently in a gigging band, playing bass.

I recently bought a Gibson R9, and when trying it out, I left any skills I have, at the door..

I don't get nervous on stage, and can play 4 hr spots, mo worries. But, if I enter a shop and pick something up to play, I fumble around, play bum notes, and my timing is shot.

Anyone else, thus affiliated??