Chosen Solution

So I think I damaged my optical drive by putting a disk while it was sleeping. The drive would not easily accepts disks. I purchased a replacement and reconnected everything but again the NEW drive finds it difficult to accept discs. ( just a note, I’m have experience in repairing laptops, after the install everything else worked fine) To clarify, once the disk is inside and spinning it can and is read. I think The issue a some sort of pressure from the case that compresses the drive. I have tested this by unscrewing the case and using the drive and it manages to grab disks much easier than when the case is secured. Is there a what to test any pressure on the drive? additional note: I did not drop my macbook, there is NO Physical Damage to that area or any other area on the laptop.

Sounds like a misalignment or seated to high. What is the number on the drive? Do you have the number from the original drive? I suspected it has not been fully seated. Did you swap the original retaining hardware when you changed the drive?