Modding a 20-pin Sega Saturn

Are their any other tricks besides the swap trick to get a 20-pin Sega Saturn to play CD-Rfs? I have had it with swapping disc and using my cart mod, and I really donft want to damage my original copies any further. If anyone here knows were I can find a 20-pin Saturn modchip, or would want to swap me my 20-pin (CD-RW moded) Sega Saturn for a 21-pin Saturn, I would be up for a trade.
I went thru exactly the same thing a few months ago when I got my Saturn... IMHO the best thing you can do is selling your Saturn to someone who doesn't mind (or know about) the 20/21-pin thing and buy a 21-pin one for the money... if you're lucky you even make a profit