I got started on flowers this evening, but I'm having trouble getting a clean sample with the 2388. I've got the rotor at 250, fan at 900, and concaves at 7.2. I'm not throwing any out the back. Currently have three large wire concaves, the first grate is a slotted, and the next two grates are solid, as per the manual. In the morning we're going to replace the slotted grate with another solid (we used to run three solids when we first started with flowers). What do you guys think, are we on the right track?