ok, i just received my 50 watt clone from focal, and the 510 is garbage, way too shallow. most attys only screw down half a turn. it will make the connection but the attys pop off too easy. i need to know if its just mine or thats how they are made. i had a cloupor hanna 30 watt clone and the 510 was perfect. so i need some help, because i'm thinking about returning it