coolingmist boost adjustment
 

I just got my coolingmist stage 1 delux
And wonder how I adjust the boostseting on my solenoid.
I have one no/nc conntact that swithes the waterij. on at 10 psi, But the solenoid I got with is says 300 psi,is it possible to adjust on the solenoid if it flows to much water inn? or is the solenoid just a 300 psi solenoid and if thats to much flow I have to buy a smaller nozzle?