he stated it turns fine to port in reverse, just a problem starboard in reverse.
check to make sure the drive swings pretty equal to full luck each way and take a measurement from a point of reference. if your drive isnt going to the starboard as much as port I would start there.
I had a problem where mine wasnt going to port even close to the opposite way and it wouldnt turn good evough. I found that after the prior owner had some meatball replace the PS Rack and the steering cable, they never matched it up to the original so I had to modify the cable holder assembly at the rack to allow it to move one inch more which made the difference on the outside.
I actually cut the end and pressed a nylon sleeve inside to match the cable rod to ride in. works great now.
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"Changes In Latitudes, Changes In Attitudes "

1996 238 Vista dlx "Casper's Toy Too"
2006 5.0GXI w/closed cooling, DP-sm 1.95 drive
Previous boat:
1998 Sundowner 205