[Fixittt]

If it were me, I would do 2 things, get a shim. A good quality shim to garantee that your block is flat. U may have to modify it, or the block for the temp probe. I would rather U madoify the block but cutting a small channel into the bottom for the probe to sit into. I have also found that some of them slim probes, if you put them in to far, will cause the block to lift on that end. So check that. Also a push/pull fan config on the cude might help, more air thruethe rad is always a good thing. Also a good lap, and very very very very very (U get the idea) thin layer of thermo compound will also help. Remember the coumpound is not there to cover the whole chip, but just to fill in mirco gaps between the 2 surfaces. many many people get that wrong. Also, with the shim installed ( I highly recomend this) U can crank down a bit more preassure on the block, there for cranking the block to the core. What type of pump U using, for that cube style U need a beefy pump. remember, the Cube style rad and the maze 2 both reduce flow rates. So U need to compensate. If you are running the pump in the res, and upgrade to a bigger pump, then the bigger pump will produce more heat, so keep it out of the res. Also something else to remember about the maze blocks, there are alot of 90 degree bends, and alot of places for air to get trapped. So beofre mounting the block to the board. Run the cooling system and rotate the block several times, smacking it on its sides, top and bottom. I literally bang them around to insure all air is out. I hope this is of some help. Another note, I would mount the cude if U can so that the water flow goes into the top of the rad, and feeds downward thrue it, this may help improve flow. As it is not trying to lift the water thrue all the bends of the tubing.