Hi, I'm new in the world of turntables, so I have the following question: I have a few 7" singles and I also have these same songs in my others 12" (33 1/3) LPs, but the 7" versions sounds a bit slower than their homologous 12". So, Its that normal or my turntable is defective?. By the way, I have a full automatic direct drive quartz lock turntable.Many thanks and sorry any mistake in the redaction, but my english is not perfect!!