Also when I ran mine with MIP cvd's center or driveshafts, you can replace the setscrews with the stock emaxx driveshaft pin, that is used with the plastic shafts......it is a perfect and threads in nicely as well. But as newe said...letting the loctite cure and dry is the key and 24hrs seems to be the best bet

The only other thing I know that messes up loctite - even a trace of oil or grease will make loctite either not setup at all or give you a weak bond that won't hold. I use motor spray and clean both parts before loctiting.