PS2 Ritek Problem

[boofs_Magee]

My friends ps2 played TDK DVD and Maxell DVD, that is the version 3. When I inserted a Ritek G04 it froze right after green then blue loading screen. My other friend who has the version 5 plays just about anything you throw at it. He played Starlogic DVD's on it, someone returned them to office max and instead of puttin them on the shelf they throw them away (so crappy). He asked to have them, hahaha. Anyway his plays just about anything w/ the swap disk slide card trick. THe first friend w/ version 3 is limited.
My ps2 is in the shop right now, VA beach www.Richpsxparts.com to be exact. Is it compatibilty problem?, cuz it doesnt really sound like laser is worn, he friend said even though its a version 3 he has only played on it about 10 times, he owns no games for it. Kinda a PC man.
I just hope my ps2 plays ritek i got a 100 of them.