The test subject is a 2014 Dean Custom 750. That's the predecessor to the 750X. Mid-level with high level features like ebony and through neck; also neck and bridge active EMG 707. Two troubles - 1) Bridge radius is 15". Neck radius is 20". The outside strings buzz or the inside strings are too high. The tune-o-matic is problematic, "BH-99-7". This cheapish zinc bridge has pre-slotted saddles. Saddles can be replaced on the ABR bridge - where can replacement saddles be purchased for this generic 7 bridge? The replacement saddles could then be radiused to 20". 2) The string through body in a V pattern but I believe for best tension feel the distance behind the bridge should be as short as possible. The 7th string sounds weak, and maybe that's part of why. EMG 707 seem to have a lot of string pull even with pickups low. I get the best tone with .056. It seems .058 and .060 present too much metal, or the long string length in combination lead to weak sustain. Then the fret buzz kills it when action is good on the middle strings. What do you think? Also, it seems a stoptail is a better design. This has been hashed in other threads, but the only sustain coming from string behind the bridge is sympathetic vibration. I have to weave material in to quiet that down, it's like built in reverb otherwise. As it is without modding this, I'm looking for matching tone from the seventh and sixth strings. Thank you for your reply.