Forum:BlackValley Lockdown Help

I love my Blackwing/Mist Valley deck and It has won me many duels but I always have one problem. It's really hard for me to get over high attack monsters. Compulsory Evacuation Device(love this card) and Icarus Attack help a lot but it doesn't feel like it's enough. I have strong cards like Mist Valley Thunder Lord, Leviathan Dragon, and Red Dragon Archfiend but those are more situational cards and my deck doesn't specifically try to special summon them. Any advice would be appreciated thank you. The most problematic cards for me are Starlight Road and Prime material dragon.