I ordered a set of BKP Impulse pickups to go in my new guitar (linked here). Afterwards, I received an email from one of their workers stating that they weren't sure if it would fit in my guitar, and they may need to "modify" the metal backplate, and even still I "might" have to sand down the cavity to make it fit. My question is, does anyone have experience with this? Also knowing this, would you go ahead with the order? Not sure what to do right now. I've seen videos of people with Ibanez 7 strings and BKP Impulse pickups installed, so is this potential problem something specific to the particular model I bought?