1999 Toyota Camry Solara

ON FLAT ROADS,STEERING WHEEL BINDS OR LOCKS INTO A LEFT TURN REQUIRING DRIVER TO USE CLOCKWISE FORCE TO THE STEERING WHEEL TO RETURN IT & MAINTAIN VEHICLE ON (CENTER) STRAIGHT PATH.(STEERING WHEEL DOES NOT RETURN TO THE CENTER). IF I LET THE STEERING WHEEL GO, VEHICLE WILL TURN INTO THE LEFT LANE OR CENTER DIVIDER IN ABOUT 5 SECONDS. I AM AN OUTSIDE SALESPERSON AND ON TWO OCASSIONS I HAVE HAD TO SHARPLY STEER THE CAR AWAY FROM THE LEFT TO AVOID HITTING ONCOMING TRAFFIC,I HAD NO EXPECTATION THE CAR WOULD STEER ITSELF TO THE LEFT SO QUICKLY. I UNDERSTAND THAT SOLARA AND SIENNA SHARE SAME PLATFORM,POWERTRAIN & STEERING...SIENNAS HAD A SIMILAR PROBLEM (ODI PE99-070) & OWNERS HAD NEW MODIFIED STEERING RACK GUIDES REPLACED TO CORRECT THE PROBLEM & AND THAT THE SOLARA STEERING RACK HAS QUIETLY BEEN MODIFIED WITH NEW PART # 44250 06081. I TOOK MY SOLARA TO THE DEALER TO CHECK ALIGNMENT ABOUT 6 TIMES(FIRST TIME WHEN CAR HAD ABOUT 300 MILES), ROTATED, BALANCED TIRES,DEALER TOLD ME BRIDGESTONES POTENZA TIRES WERE TO BLAME,I REPLACED THEM WITH B.F.GOODRICH BUT THE STEERING WHEEL CONTINUES TO BIND OR LOCK INTO A LEFT TURN.