Welcome to “TAG”. Like Clark said, just use a Burris or Coleman external mini starter all the time. You’ll never have to worry again.
I’ve been going to the track by myself for many years and get my kart out / on the stand / on the ground / started every time / run all day / back in the truck – completely by myself if I have no help.
I’ve had every problem you’re describing over the years with the TAGs, but haven’t worried about it since I got a remote starter.
Our kart shop has new and used mini starters and builds a wheeled dolly kit for the mini starters to make starting yourself a breeze.