Kingbuzzo of Dreamcast-Scene.com is offering an Arcade Stick modding service:

So I've finished a few mods, and am willing to offer my services to the public.

I wont be building arcade sticks from scratch, but instead I'll be modding arcade cases with better parts, great paint jobs, and I can build adapters so that you can use it on just about any platform (dc, ps2, saturn, snes, md, neo-geo, usb......)

For example, if you have a dreamcast agetec arcade stick, I can fit it with a high quality stick and buttons from sanwa or seimitsu, as well as build adapters so you can use it on just about everything you own.

Please post any questions at the DCS Marketplace here.