when i had my ps2 apart... i installed a switch for my magic 3 modchip. the switch works beautiful, but my problem is that some games when read will boot up, but at certain parts will make my PS2 sound like it's trying to force the laser to move. maybe the belt is slipping or something. it doesnt sound good at all. when i took the ribbon cables off, and put them back on, i manually moved the laser on it's tracks. is this bad? what can i do to fix this? is this normal for people new to modding?