Longhair..I have the SE Pro and the 705...I have been using the SE over the last 2 months , trying to get the hours on it to start understanding it...and I picked up the 705 the other day and found I had to go back to the manual just to find out how to use it again....I wanted to ask you a question about the SE Pro...over the last few weeks when I detect a target and lay the SE down on the ground to dig the target, I start hearing a lot of what I call little flute sounds thou my headphones, when I get up to start swing the detector its real unstable for about 10 to 20 seconds...if I keep swing it, it goes away. or if I hold it up in the air for a bit it goes away, or I can push pin point and back to detect it goes away....I thought it might be the sunray x-8 coil , I called sunray and he was not sure what would cause something like that, asked me to try another coil so I put the S.E.F coil on and it does the same thing with it..I thought it might be the minelab pro find pin pointer, because I could hear it in my headphones every time I turned it on and off..so I tried the whites trx pin pointer and I couldn't hear it in the headphones, but the detector was still unstable 50% of the time when I pick it up off the ground....any thoughts on what might be going on...