You probably are not going to find the answer in that thread. Maybe look in the manual for a 3.0 or 4.0 as they use the same bulkhead and servo mounts, and the Protek servos were not really a thing when the 2.0 came out so the 2.0 manual doesn't have the shims listed for Protek servos Alternatively, you could just try different shims until you find the combination that puts the servo in a spot so it doesn't rub. You can also remove a little material from the bulkhead (a common solution to this issue).