system restore only put back the changed system files. got that SYSTEM as in op system not monkey's files so only the files mm 4 changed that were system files were put back to mm 3.
suggest installing mm 3 in a new folder location setting it up like you want. then installing mm 4 over the mm 3's old folder location, this gives you a new install of mm 3 and a new install of mm 4. which by then going though the uninstall process for mm 4 it removes all the mm 4 files. and leaves the mm 3 files alone.
then run your auslogics registry cleaner program, its free can be found at majorgeeks.com
then run your junk files cleaner i use ccleaner.
you should be good to go then.

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system restore only put back the changed system files. got that SYSTEM as in op system not monkey's files so only the files mm 4 changed that were system files were put back to mm 3.
suggest installing mm 3 in a new folder location setting it up like you want. then installing mm 4 over the mm 3's old folder location, this gives you a new install of mm 3 and a new install of mm 4. which by then going though the uninstall process for mm 4 it removes all the mm 4 files. and leaves the mm 3 files alone.
then run your auslogics registry cleaner program, its free can be found at majorgeeks.com
then run your junk files cleaner i use ccleaner.
you should be good to go then.
8) .