myth chip lite 101 problems

hi i have at the moment got a myth chip lite 101 installed into my ps2 its ok for playing homebrew and directly botting ps2 games original and backups but when it comes to booting ps1 games it has problems like after 6 attempts it will decide to boot. another problem is that im trying to play a game called monster rancher evo and i cant use its feature of inserting a different cd to create a monster because the disc becomes unrecognised after it has been taken out. can anyone help me with this problem if not recommend me a chip please thanks.