I've used up my celcius yearly rate and need to get out and spray again. I'm thinking of going with Q4 on bermuda and a Sethoxydim/metsulfuron mix on centipede. think if I close the tank off and continue to pump in order to clean the lines and then open the other side and spray the other solution though the lines good I will be safe? I may just have to do all my bermuda and then all my centipede. Just trying to be more efficient. Those who spray different mixes how do you transition from one lawn type to the next?