Re: Changing neck pickup in JS1000
Make sure the neck is straight as possible, then adjust the string height. Once the guitar is setup properly, finally adjust the height of the pickups.
Lower the neck pickup as low as it will go without actually removing the screws. Once the neck pickup is taken out of the scenario, raise the bridge pickup to the point that the pole pieces are touching the strings.
On a clean channel, with lots of volume, play the low E string somewhere in the higher register, the 15th fret is sufficient. Listen for the wolf tone, and then adjust the pickup height until this wolf tone is no longer apparent.
Repeat the process to the the treble side of the pickup, and then finally the neck and other pickups. You'll more than likely find that the neck pickup is set lower than what you would have assumed to be correct, this is fine.
In the neck position, comparing my js1200's PAF Joe, which is flush with the pickup housing, my rg570's PAF Pro is set below the pickup housing on the low E. With the string height, neck, and pickup height being adjusted properly, you will find that both the PAF Pro and PAF Joe have more than enough..."tubular" sound.
If your pickup is sounding muddy, it's quite possible you either have a poor setup, or your pickup is adjusted too close to the strings. I had the same complaint about these pickups until I had set my guitar's neck as straight as possible, with no buzz within the lower register...considering that there are no issues with fretwear there should hardly be ANY relief, string height to 2mm on the low E, 1.8mm on the High E, and finally having adjusted the pickup height as previously mentioned.