phase shift oscillator distortion

Thanks Crutschow....just built the circuit you supplied above and I get a beautiful symmetrical sinewave
...... well....that's after I corrected my wiring, I had R8 and R9 transposed....doh

So now I have a waveform I can use while I play with my new toy, I just bought a new Siglent SDS 1202X-E
Digital storage scope....love this thing!!

thanks again Crutschow....well chuffed!