Reedy 5100 to big for my FS... What do I do?

[dagfather]

I just received my FS and I bought last week 3 packs of Reedy 5100.

They are actually to high for the FS (I also have the Lipo weights - but they build about 1 mm). I'm thinking the only ways is to either cut the top plate, but that will make it softer. And considering the upgrade kit coming in March in Japan has a stiffer rear top plate, I'm not sure I wanna do this.

The other option is to dremmel down the battery holders and move the batteries all the way out. But Then they will problably have some room to move in..

Any ideas?

Read lots of posts about people running this car with those lipos, so I didn't think these would be a problem.