Had an interesting situation with the Falcon this past weekend. Changed my M1 coil out for some F1's, when I get a new tank I typically buy a pack of each coil just to see what they all have to offer then re-purchase the good ones I like. Anyway, I put the F1 in, primed, let it sit in Squeezed Mango juice. First 100-200 hits were amazing, then things went south. I would get a burnt taste every other hit unless I let it sit for 20 minutes between puffs. Kind of weird and unimpressed by the F1 coils. I went ahead and put another one in (last one in the pack) and tried some Tea Time juice that doesn't use any sweetener to see if that was the issue. It lasted me last night for 2 hours and I have it with me today at work so we shall see.