RCD 510, CANBUS but still Powerdrain

[remigi]

Hey Guys

Since installing my RCD510 and replacing the CANBUS, I am still experiencing power drain - This is not dramatic; however, after 1 week of not driving the car turns over a fair few times before it starts. After two weeks its totally dead. The battery is 6 months old, genuine VW.

I am trying to work out if the gateway that I received from Bold-Sport.com is the wrong one, when I read the post on my-gti.com about replacing the gateway, I am not sure how to take this sentance "The problem is the CAN bus Gateway is too old and an updated version 1k0907530 (1k0 907 530) of L revision or higher is required"

Does higher in this sense mean 'L - A' or 'L - Z'?

I was sent the following for my 2005 MKV GTI from Bold-Sport.com "we have sent a 7N0 907 530L, HW 1k0 907 951"

I have gone to JayCar to buy a Multimeter to test the current across the fuses, I assume I can do this?
Process:
1) Open the bonnet
2) lock the car
3) wait 2.5 hours
4) test each fuse to see if there is a current draw - anything above 0 is not right...?

Thanks for the advice in advance!