Musiclily Pro 80x18x15mm Bass Pickup Height Foam Self-Adhesive EVA Foam Anti-Vibration Foam for Jazz Bass Pickup, Black (Set of 10) will work as a tempory fix. The reason is this type of foam is stiff but will compress for the initial pickup height. however, the foam does not decompress very well like the rubber or other simular materials. If you need to experiment with different pickup heights you will eventually need a new piece since the foam does not decompress to the original height very well and not at all if increased height adjustments are needed down the road. You will also see any indents etc. from the pickups or wires depending on the routing . After adjustment the pressure from the mounting screws continue downward force and the foam will eventually adjust down making the pickups loose in the cavity and a new piece will be needed to adjust to the correct pickup height. Note this will not take long to happen which is why I am includng such details. I like the size and packaging but you will need better foam material to start.