I have a Cervelo Soloist Team with the adjustable seat post head which is set in by a screw on the back of the post. The hole which sets the post in the desired position has become enlarged which causes about 4 mm of mobility while riding it. You can purchase the seat post head for about 20 bucks but currently there are none available, anywhere!

I have races coming up and there is no eta on the availability of the part. Are there any suggestions for making the current one work. Has anyone heard of or ran into this problem?