Has anyone successfully used LA Cran-Raspberry flavoring? I have never ran into a problem like this before. Basically the first few drags taste amazing but the buildup on the coil is pretty much immediate! My vamo is getting replaced at the moment so I only have fixed voltage batteries to try it om so it may be better at a lower voltage once my vamo gets back but still, I have never had the problem of buildup on coils after 4-5 drags. Has anyone else experienced this problem?