Hello everybody!! First of all excuse me for my english because is not my native language. I have started building my own coils for two or three months now. I have made successfully some aliens and fraliens but my coils always have big hotspots that do not get removed easily. I believe my builds are made quite tight (i mean with no spaces when building) (i will post a photo). What can affect the build to have many hotspots? Can it be the final wraping around the core? Any idea anyone?