I managed to get my calves to go from 13" to 15.5" in just under a year and a half after some experimenting in college during our off seasons of volleyball. I'm 6'1" and have the same long legged problem. It was pretty simple once I figured it out and the rest of the team saw results doing the same thing.
Split = Quads and calves one day, hamstrings and calves day 2 with 3 days in between.
Day 1:
Typical quad work out super setting with calves. Do a set of squats, then leg press calf raises. Finish out your sets as such. Leg press then standing calf raises. Finish out your sets as such
Day 2:
Stiff legged dead lifts super setting with seated calf raises. Russian hamstring curls (Nordics) supper setting Standing calf raises.
Just a sample but you get the idea. Obviously you would do more quad and ham exercises. But 2 major things though, leg press or donkey raises on seperate days vs. seated raise days, seperate your soleus training from stretched gastroc training. AND finish your set then do a burn out set DIRECTLY after every calf exercise. This hurts like help but pumps were amazing, and my vascularity was incredible. Try it out for a couple months and see what you think.