Need wakeboard rack for 2003 SSV

The locking collar on one of my wakeboard racks cracked. This is the Mako removable fork that uses compression to hold it to a round post mounted on an oval tower crossbar.

Does anyone have an older rack to sell or have any recommendations on one of the commercially available units that would fit this tower. I have to have a removable rack so that I can get the boat in/out of the garage without the forks catching on the garage opening. I really don't want to have to unscrew the clamps after each use and put them on again before going out..

I'm also going to see if a machine shop might be able to make a replacement collar, but I'm not holding out much hope.

Thanks in advance for any thoughts...

Scott