Carseat issue?

Heidi
My 7 week old, hates his carseat. It's really hit or miss though. Sometimes he does just fine. He looks around and goes to sleep. Other times, I want to pull my freaking hair out. He screams so much it's like he is going to make himself throw up. The crying happens more often than not. I've looked into silent reflux and he doesn't meet any of the symptoms! He rarely spits up. He's not cranky during or after a feeding. I've looked into buying another car seat but am hesitant because it's not consistant. Sometimes he's fine in this seat. Any advice? Is this something he's just going to have to deal with and get over?