That's a great idea on the hockey pucks. I've seen them used without the "block" on top but I didn't like the idea of all of the weight being on the thin plastic edges of the jack adapter. I use a small block of wood that fits inside. It works but your idea is much better. Well done!
2008 IB E92 M3| BBS | KW | Arkym | Platte Forme A.G. | Active Autowerke | K&N | Fabspeed | Dinan | Evolve-R