Forgive me for formatting issues, I don’t do text post often. I (29m) and my ex (27f) have a son (6m) and we have 50/50 legal custody. However he lives with her for the school year in California and I get him for the summers in TN. We have been separated/divorced since he’s was 2. I am in the army so when we originally split it made the most sense to have him stay with her most of the time. She moved back to California to live with her parents, which is conveniently 5 mins away from my parents. So my son would have a better support network with her. Living with her parents was supposed to be a temporary thing while she got back on her feet (divorce was her fault due to infidelity, but I assure you both of them are and were well taken care of) the issue is that was 4 years ago and there’s no end in site. All things considered he is well taken care of and well loved, no forms of abuse and he wants for nothing. The issue is he is living with his grandparents, who spoil him (as a grandparent should) to the point where he is becoming a brat and displaying a number of concerning behaviors as a result of my ex’s parenting in conjunction with her parents. This includes acting out at school (stealing things, breaking things, not listening at all) and at home. I worry that these behaviors will only get worse if he doesn’t get a change in life style. My legal question is: is that enough grounds to have the custody changed? I worry that it’s “not bad enough” for the state of California to care. For reference, I am successful at my job, own my own home and have for years, require no assistance from parents or family members, I’m also about to be married. I say all of that in the hopes it helps my case, having a stable home and income in addition to other adults to assist.