I bought my first Ibanez premium guitar after hearing a lot about how good they are and how they rival prestiges. I bought an Ibanez RG927QMZ. I took it to get set up and it cost me nearly $140 and the guitar won't stay in tune when I play with the trem to any extent. Is the Edge Zero II-7 tremolo w/ ZPS3Fe stabilizer supposed to be a good solid trem? I thought that's what people said about it when I did reviews on it. Or did the guy set it up improperly or something? It goes about 20-40 cents out of tune and the 7th string tends to drop completely from A to around G.