I have a Charvel DX-1 ST that came with EMG 81/85's. I ordered a 57/66 EMG set knowing that EMGs are easy to swap with other EMGs. However, I found out that this is not the case. I took out the original pickups, and hooked in the new ones just fine, but the 57/66 set seem to stretch my pickup rings. And when I do get them screwed in, adjustment is impossible because they're too tight a fit. Does anyone here know what the problem might be?