so i followed this diy to use a B7 key with my B6 s4, and programmed key with vag com. worked great. reprogrammed all 3 of my remotes including the new b7 one. they all work great. i take apart b7 key to insert immobilizer, put it back together....and now the b7 remote does not work... both other remotes still work. i am stumped. anyone have an idea?