[sdiy] minijacks, 3.5mm, and 1/8" jacks questions

[leaf at babble.vibrant.org]

Hello,

I recently built a 4 channel analog sequencer (based on the superseq
design) and i've found that the jacks i'm using don't seem to work
consistantly with cables - plugs won't quite grip in some of the jacks
even though they're the same model.  Sometimes the shaft of the plug seems
to short.  Also, some plugs seem just a tad bit too fat for the jacks.

I'm wondering - what is "standard" or common among synth manufacturers for
minijacks?  Is 3.5mm the standard now, and is that used on old arp's,
roland system 100, and kenton?

Also, is there any tips to buying plugs and jacks?  stick to switchcraft?
anyone have any luck getting consistant results, or have a mouser part
number for jacks and plugs that seems to work well and interfaces with
other old analogs?

thanks a bunch,
Phil