If you have the fitting kit pror to collecting hardtop fit it to the car and then collect
the hardtop, any minor adjustments can be done at home at your leisure
The long torx tbar is better, its easier to screw in the fixing bolts x2, it does need a bit tension
so the long handle comes in handy
The spanner could be out of the car tool kit?, everything seems correct
Regarding the hardtop, fitting it will tell you whether all the bits needed are there