hey man i got a volcano too an i know wot ya mean its a right bitch sometimes especially if you jus wanna do one but gotta clean it as its to sticky first. takes me bout 20 mins to clean an replace bags an such i jus usually scrape most the oil off the inside with a knife then jus heat it all with a lighter an wipe off with tissue as the resin all melts when heated an comes off quite easily when wiped with kitchen towels.