Originally Posted by hanulec

the only other thing i can think of is that your servo is too far forward and the links are hitting when your near full lock. this mostly happens right in front of the servo.

i've added 1.75mm to my servo (sanwa sgr-bls) between the am24 to allow me to move the rack back w/o any interference.

another hint is to make sure your rack is centered. i use a caliper to measure the difference from the bearings to bulkhead. it is about 10mm on each side.

these are the only other ideas i have...