XRAY - Model racing cars

need help with what to try next on low grip indoor track please, my setup is base carpet exept for these changes: softist flex seting,4 deg rear toe in,+1 antidive,ackerman and servo saver fully forward. first problem was oversteer mainly on sweepers so tryed softer rear springs but this just caused understeer everywere so changed back.next timeout tryed one softer on springs all round and car was alot better in sweepers easyer to drive and laps were faster but had alot of understeer in hairpins so tryed more rear droop witch helped turn in on hairpins but caused liftoff oversteer in sweepers,so took extra droop off. please help in what to try next need to find balance in fast and slow corners.thanks rick..

anyone?? there must be a mass of setup knowlage out there for this car..

Sounds to me like you are running too much downtravel. And you might want to decrease your rear toe-in as well as remove your front anti-dive to make the car turn better in hairpins. It might be a good idea to try the diffs in the lower positions as well.