Runways Changes....Again

I had this posted here a couple (maybe three weeks ago) and just don't know what to do.After a four flight to KSLN, I arrive with my piston twin and cancel IFR (Radar Contact) since it's severe clear. The wind, from FS Meteo, is 235 at 18 knots. So, I call up the tower. They tell me make right base 35.KSLN has runways 12/30, 17/35 and 4/22. Hum...Rt Base, 35. Wind at 235. According to my math, that's a quartering tailwind on final. Not good..says I.I want to change to Runway 22 but the option is not there. How do I change the runway assignment when the in-built ATC gives me the wrong runway????BobL