Racerdx6

The hole in the dampening tubes for the CRC are supposed to be there. This is where the excess lube, over time will be released. Otherwise you end up with gunk inside of the tubes as you race more and more. The dampening tubes do not have springs on them like the Trinity car. That is what the side springs are for. They are just located differently on the respective vehicles.
I used a wide hole punch tool to kind of flare the openings on my tubes as I was faced with the same problem you were. It solved it right away.
The advantage of using heavier fluid in the dampening tubes is it stabalizes the car through your low and high speed corners. Hope this helps.
For more info, visit the CRC forum: http://www.teamcrc.com/phpBB2/