Shifter mazda g29

Hi i jut have a prototype of my shifter g29, it's just a test with mazda sribe, the piece with name "dessus shifter mazda" it's two piece how have to glue for good balance, you can add some magnet with good size
How to do :
take two magnet
Add one magnet with glue in background of shifter
add a magnet in the cap
for not have detachment
im french so i don't have a gret level in english and i don't want use trad because i'm student so i have do practice for have a great level you understant :-*)