I have a JC 150 Leslie's cartridge that needs replacement and it's impossible to locate. The dimensions call for 22 and 11/16 in. long and 8 and 1/2 in. diameter. Cannot locate anywhere. I assume I can't get anything longer or the top won't go on. Width may be less of a problem but I'm not sure. I need to know the next best size options that will actually go in the housing. Can anyone help?