Tank bag for plastic tank

After searching for two years, I finally found the BMW tank bag pictured in this thread. I found it on ebay from a dealer in the UK. I really like the way it fits on the bike, but I'm having trouble figuring out all the different configurations that you can use. I just installed it today so I'm sure I'll figure it out. A question for those that have this bag is can I use the expanded mode and still have the map pocket on top? I probably won't use the expansion mode because it sits a little tall for me. I'm just curious. Anyway, it's a beautiful system and the fitment is elegant. I'm happy with my find!
Mark Stanton

I have a LindaT's custom tank bag on my RT

https://goo.gl/photos/Gq8NzUHRxomYPHW37

You might want to ask her if she's made one for your bike. She does a lot of work for the long Distance community.

http://www.customtankbags.com/

You can use it with the map pocket on top. I've used the expansion section but don't anymore for the reason you mentioned. I found that it obstructed my view of my turn signals on the bottom of my dash so much to the delight/annoyance of my riding partners, I could ride for miles with my signal flashing. Oh well lesson learned, but it has been a great tankbag. When I bought my RS it came completely decked out including the tankbag.