I bought a P/J set of EMG GZR PUPs. Installed them into an Ibanez Destroyer. Very impressed with the upgrade! Only minor niggle..... The tone pot. It's noisy (scratchy) around the middle of its travel. I tried working it back and forth a few times, squirt of contact cleaner.... No luck, still noisy. Have tried contacting EMG via their web "Contact" form and also via email to customersupport_AT_emgpickups.com (which was the email address given on their support page), to see if I could get a replacement for the tone pot/PCB. Nowt. Nada. No response. Which is completely at odds with many of the comments I've read on this forum, about EMG being pretty good at customer support. Was going to purchase another set of these PUPs. I'll look elsewhere now, as I'm fed up with buying product from companies, (no matter how good the actual product itself), where the companies don't give a crap about their customers.