I have 2 SX Jazz Basses and a MIM 5 String Jazz Bass with the same problems. When slapping, the E string is WAY WAY too poppy.. I lower down the pickup low enough to get rid of the pop and the output is greatly reduced. Is there a way to fix this? Are there any suggestions for replacements that will smooth it out a bit and make volume even across the strings?? (the SX are passive and the MIM is active).Someone suggested using a compressor? Any help would be appreciated.