The only way to get get your weak point to "catch up" is to stop everything else and focus on the weak point. They will just bli slightly better bcz u wont let the rest of your muscle go flat out!
Calves became better with cycling and barefootrunning, 3 years...every second day or even more. Price! Lost of ass quads : )
Centopani have weak chest, wolf weak calves, milosh no arms...etc etc...
I have sen tremendous result for traps shoulder gain on roided guys! Seam to be the first muscle that POP during a cycle!