Ace Hardware carries a variety of hobby use brass strips. Get the piece that 0.016 thick by 1 inch wide, (they're about 18 inches long), sells for less than $1.50.
Cut to length to fit along the inside right wall, cuts easily with a pair of scissors. Gently sand a 1/4 square on the wall up near where the Kick spring will apply pressure. Put a dab of Noalox, (I just use a tube of Permatex dielectric grease that I had laying around), on the sanded spot.
Lay in your brass strip with the spring against it and insert your battery. The strip is just thick enough to hold the Kick firmly with no movement even when you change
batteries... unless you decide a bull riding event then all bets are off.
Jack
No need for a Kickstand or running a wire down to the spring.