Thx Steve for your input Im new to detectors and tried the high q again and yes I must of been trying to small of a piece to detect on the outer coil so I think I have all the settings right because I'm going out for a few days to give it a swing since I will mainly be searching in high mineralised ground should I invest in a mono coil I have heard most minelab coiltech coils fit even the whites 7.5 mono aussie addition coil any thoughts on that appreciated also was thinking of the 9 inch coiltech elite coil not to big or the 11 inch coiltech there expensive so would need to know they work on my machine but I guess I probably should see how I go once have had a go with what I have just wanting the best coil for depth for my tdi sl I bought the orange battery pack for the 18650s and have found some good batteries not Chinese that put out around 13 14 volts when fully charged so I'm not going to do any battery mod don't want to void my warranty thx again for your expertise put in a few pics of my homemade skid plate made from a plant pot and some covers to protect it from the elements cheers