Our esteamed friends at Old Britts are out of there "clutch operating lever body" sockets so Im going to make one. Their web site says to use 1 1/2 " pipe. Am I correct that they mean 1 1/2" inside diameter ? I can look in the inspection cover & measure how wide the "fingers" need to be I think but still riding the bike so I can't take the cover off to measure the ring diameter well. I want to have the tool made so I can get started early tommorrow. Thanks.