I like and use the RAS brand, oval shafst are uaually caused by over torqueing. The factory torque spesc. are 25 ft. lbs. Yoo may be able to make them round again with some side pressure like in a vise or a press, be careful so you don't make them collapse or make them worse I have had to grind on the ends to ge the aftermarket rockers to slide on and off after someone had over tighten them instead of using the factory torque specs.