My garage door motors still work great- 30 years old. We have a wall enty pad and 2 out of 3 cars are wired to open the door. Our third car has the old visor opener. Today our garage doorwas hacked- the dog scared them away, and I was home. Question- Do I need to bbuy a whole new system to get rolling code openers or can i just purchase new remote(s) or wall opener. Thanx