Fix some sync crash problems

---

How to use: Add 2 variables into BlackMarketTweakData, custom , custom_sequence and base_on Sample:

self.armors.level_11 = {
	name_id = "bm_armor_level_11",
	sequence = "var_model_07",
	custom_sequence = "spawn_zeal_heavy_armour",
	upgrade_level = 11,
	custom = true,
	base_on = "level_7"
}