Copied from RC10Talk
I wonder would this fit...
A 6Z16M298045 from sdp-si.com
https://sdp-si.com/eStore/PartDetail...54&GroupID=342
It's 4.5mm wide, which is a bit wider than the kit item (4mm)
or maybe this one...
B-MX-298-047-NF from smallparts.com.au
http://www.smallparts.com.au/store/i...032mmpitchmxl/
I never had a SWB but I found the manual online...