Struggling with dumping Mario Kart 64 & Star Wars: Shadows of the Empire

[DragonQuarter]

Now I'm having checksum troubles with a single Game Boy Color game: Tom and Jerry in - Mouse Attacks!

Tom and Jerry in - Mouse Attacks! (USA)
1st Rip:

CRC32: 6E20324F
2097152 bytes / 2,048KB

2nd Rip:

CRC32: 42F247FD
2097152 bytes / 2,048KB

From No-Intro:

CRC32: 38CE3F76 or CE4CA7B1 (Rev 1)
2097152 bytes

I've tried several times now. Cleaned the contacts of the GBC cart, reinserted plenty of times, but I keep getting random checksums. Not sure what the deal is :/