Easy and cheap mod to tighten the throw/return on your Sanwa (prob works on about any) joystick, whether it's aging or you just want a more responsive feel.
Go to Home Depo, I'm sure Lowe's has the same thing. And find the aisle with all the door springs in it, for screen doors and gates and that kind of thing. If your Home Depo is laid out like mine this aisle will be next to thr hardware aisle that had the nuts and bolts in it. There will be a display with smaller springs towards the front and at the bottom of that display will a small box that just says like Assorted Springs. Buy it..Inside are a ton of springs and most are useless for you but there should be two or three very thin wired, easy to compress springs that are slightly wider than the rest. Set TWO of these aside.
Now take your stick apart and get your spring out. There are a bunch of tutorials for.this on YouTube. It's painfully simple.
Once you have your joystick spring in hand it.shoukd be obvious which springs of the assortment are the ones you want as they are the only.ones that even closely resemble your stock spring.
Take the TWO new springs and slide them together. They should just slide right together and look like a single spring. Now just install them in PLACE of your.stock spring, setting that spring aside somewhere safe. Reassemble.
Poof. Done.
You can adjust the stiffness by only using one of the two new springs or one mixed with your stock, or all three together, etc, lots of.options to really tailor.or crisp you want thtle throw and it costs about 4$.. you can order a spring from Sanwa but why wait and go through the trouble?
I noticed a crisper feel and easier charge inputs right away, way fewer accidental jumps or over-throws.. all in all, couldn't be happier and counting the drive to Home Depot and the wandering around looking for these things, it took me an hour and cost less than 5$.