I'm having an issue where, on load after a save, the cargo platforms are spinning off in some random direction with super-speeds as opposed to being in my cargo bay. If I don't pause and delete them fast enough orbiter will crash.
It may be an issue with XR-5, since there also appears to be a...
http://www.kpsec.freeuk.com/components/switch.htm to find out what type you're looking for
E-switch to get part numbers. E-switch uses digikey (among others) as distributors.
I am sad to have seen this project die down.