It's never easy. Pulled many a 500 magazine tube over the years. Easiest way is 1: Stand the 500 up and apply nail polish remover with an eye dropper or Q-Tip into the magazine tube threads in the receiver. Repeat a few times. Let it sit for a while. The acetone breaks down the Loctite. Straight acetone will take the finish off, so avoid it. 2. You can use a hair dryer on high heat or a heat gun on the inside of the receiver towards the threaded end of the mag tube. Move the heat around the threaded end. Let it get hot. Ultimately the Loctite softens enough to remove the tube. 3. With the barrel off and your shoes on, wedge the butt stock between your feet and loosen with a rubber strap wrench counter clockwise. The strap wrench gets better torque near the end of the mag tube where the barrel would screw in. I've actually broken a strap wrench (Craftsman at that) and sometimes you have to reheat the threaded area to break the Loctite bond a few times. Vise grips and leather and all that has too much potential to dent the tube or scratch it up. A rubber strap wrench is harmless. Rule of thumb, the older the 500 the more difficult to remove the bond. Once off-sometimes it took major effort to break the bond-clean the threads of the remaining Loctite with nail polish remover. I always add Tetra grease to the threads. Loctite is factory overkill. Hand tight is good enough. Wolff makes an excellent replacement magazine spring. I've replaced many a mag spring for friends over the years. My 1985 (I bought it new in 1985) 500A with thousands of rounds and always 5 in the pipe in the gun safe 24/7 had the original mag spring in it when I finally replaced it because I just decided to this year. The 1985 magazine spring was still working fine after years of use, but I figured what the hey.............