Hi Roger ans welcome to the site!
You made a good first purchase AMMO works great. I have never used it with Magnetic but what i can tell you is AMMO has great effects once you have learned to find your sweet spot. please read link below for that
Now with your age you will probably find that you will need higher doses as we get older we produce less and less mones. If i were you i would experiment with and without Magnetic to see what results you get, who knows you might even stop using the Magnetic.
Let us know your results and good luck!!