when i hit the brakes the motor dies what adjustments do i need to do to solve this. not shur to tight ?

Adjust your idle up abit

I had a simular problem with my Tsunami. What was happening to mine was when brake the carb was completely closing off...........causing it to stall. What I did was adusted the idle screw enough that the cab stays open a bit to keep the R/C alive. So far its been working excellent. Hope this helps