String spacing for Ibanez bass

[bassstan]

Hello,
I'm thinking to try a Nordy mute on my Ibanez SR500. The default string spacing on the Nordstrand website is 20mm but there are several other spacings. Has anybody tried this mute on an Ibanez SR bass? What string spacing did you assume? Thanks in advance.

bassstan

 

[iiipopes]

The Ibanez 4-string basses I have played have all been roughly Fender standard. Instead of paying $40 to Nordy, take a popsicle stick, glue a strip of the packing foam that comes in new pickup boxes, glue it to the popsicle stick, hold it up to your bridge, and take an Exacto or utility knife and cut the slots yourself.