Same pickups on my ex5 and many other pbg bass kits.

You may not have needed to dig out the pickup cavity depth as the string action tends to sit fairly high above the deck and if pup's are too low there goes your output level.

Simon is on the money with using high density foam in conjunction with the springs which on their own are pretty useless.

Hope this helps in some way.

Cheers, Waz

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