I know. It's impossible to have an actual discussion on these forums, very hard to obtain any relevant info, when you have to filter thru pages of condescending snobs trashing anything that isn't their type or their way or their ideal _______.
I Love my Gretsch Electromatic Junior Jet II short scale bass! 30.3", but I didn't consider strings when I bought it: I play drop-D and shorts naturally have lower tension, so you'd think that heavier gauge short scale strings would be more common, but they simply don't exist. The biggest stainless steel shorts that exist are 45 65 85 105. There's 5 string sets in 40-120 and 45-125, so you just can't get a .110 or .115. I found a nickel-plated steel .110 from
Stringjoy.com, but a .115 at D would be comparable tension to a .105 at E.
I did recently, finally find a source for actual custom made strings:
Custom Bass String Configurator – Newtone Strings
You input the length of the ball end to the nut when they're on the bass, you pick stainless steel or NPS, you pick hex or round core, and you pick your gauges in any even number size (.128, .130, .132, etc) and they make them to order in the exact length you need!
I haven't tried them yet but am planning on ordering as soon as I get paid. They come out to ~$40-~$50 for a 5 string set.