Hi everyone I was wondering if you could help me out a bit? I have a Whites Classic IDX and bought it used because people were raving as to how good it was in nail infested areas. Well, I have been using it and been very disappointed with the 950 coil when there are tons of nails. Could you help me decide which small coil to get that would work good with this machine. I would hate to sell it but need advice as to what coil to purchase that would work best when there are tons of nails from an old house? Help help!!