Mine kept coming loose and falling out no matter how tight I got them. Then after looking in service manual it said to tighten so many INCH pounds, did it and they never got loose again. After 50 years I’m a firm believer of Chryslers specs.I am using the 440 source windage tray on my 440 and no issues. No loctite on the threads. Snug but not overtighten is the key.