First of all don't use 80min cdr's because some playstations especially older ones can't handle them. Second I found that cdrwin is useless it can't read or write cd's properly. Try using clonecd or psxcopy. You can patch the images for both of these programs.
Also I find that most newer games don't work if you read them at high speeds greater than 2X. Put the originals in your burner and read at 1X this should cause alot less problems.
Cheers