Just purchased the {insert unauthorized coil manufacturer's name} 6" DD 3kHz and installed it on my 705. Would like to ask those that have achieved the coils optimum performance the settings that you have found to be satisfactory with the 705. GB setting is 26. Used it for a time this afternoon for testing & to get more familiar with it. Set it in coin (2) program. Area has a lot of trash items. So I was getting variable TID's. on the targets that looked promising. You guessed it all trash items. Interesting to note when I used the detectors pinpoint over the target it would center it nicely with a stable ID in the trash arena which seemed to confirmed the target before digging? Hopefully tomorrow I will be able to try it in a different area. Didn't realize this thread was started over 3 years ago, if I have it right? Thank you for starting this coil review and those that have contributed. Pete - USAF 62-66