Hey guys, Just bought my mflb a couple days ago. This is my 2nd vape, first being the extreme q that i love and use daily. I'm having some issues with uneven burning and getting black pieces . I know there is a learning curve with these but I'm just looking for some helpful tips. I hold the battery in for about 3 seconds , draw for about 5 let go of battery and suck for like another 2 seconds. I was drawing very slow at first but it seemed to be too hot so now i draw a little harder and its better but still getting black pieces of bud with some green and brown pieces. I shake the hell out of the box. I even tried using the brush to wipe the trench after every hit to make sure no bud is stuck on there.Anyways I hope I gotta like break it in or something cause it is definitely a cool little vape. How many hits should i be able to get from sayyy 1/2 full trench? Since ive been drawing a little harder the first couple hits are great but after like the 3rd or 4th hit i get a nasty taste and when i look at bud there is little black pieces at the bottom. not many but still there.Thinking about getting the solo or maybe try the thermovape since its convection. Any help or tips would be greatly appreciated.thanks