I have the 1974 Sterling Trailer and have to replace the rollers which are 6 inches long. Sterling has gone out of business and many stores here (West marine etc) do not stock the size. I only use the trailer to move the boat 500 feet to the ramp and back so a new trailer is not needed. Has anyone else been able to fid the rollers? I replaced the roller with a smaller one as a temporary fix- unsure that this is good for the boat. My other option is to weld a new bracket with a more standard size roller. Any help would be appreciated.