A few things to add about legs -
*loads of old games have dodgy legs that don’t seem stable. You can get plates that go inside the cabinet so they attach properly, without these the game will always be wobbly. They’re pretty cheap and well worth it.
*On the outside, if you’re concerned about the legs damaging the artwork, you can get felt things that cushion in between.
*A cup holder makes a nice addition.
*Make sure the legs on your machine are the right length, as often people who own several games accidentally give away the wrong ones - manuals should tell you whether you should be using 27, 28, 29, 31” legs etc and it does make a difference.
*I tend to keep the back legs with the foot screwed almost out, the front legs all the way down, for maximum incline and speed. Some may hate that and prefer a more gentle slope. Remember to experiment with what you like best. And use a bubble leveller (or whatever they’re called) - I’ve found it easiest with 2 people, one under the game using their back like a turtle to lift it, the other giving the instruction eg. Back left needs to be higher. I think there is a fancy smartphone app one that talks to you so you can do the job solo.
*All legs seem to be either attached with one or the other of two types of bolt. Easiest is to buy yourself one of the tools with both fittings (one at each end) and preferably a ratchet. Many games, annoyingly, have both types of bolt on the same machine.
*Finally, I attach furniture sliders to the feet, to facilitate moving the game either for convenience or for nudging. Less scratches, way easier to shift. I also have them on the ‘end’ of the machine, so when they’re tombstoned you can slide them around like Tetris without giving yourself a hernia or scratching the floor. These are best for hard wood/vinyl floors, I’m not sure about carpets.