Hi there! Thank you for bringing this issue to our attention. We apologize you are having issues but I can assure you that the vault caps you received were not too large for your hubs. These caps are designed to fit extremely tight and do require a good bit of force to install. Please note that these are the genuine caps and unfortunately, there is no cap that is 8 thousands larger. The next size up is approximately 2-3/8'. We have found that hitting the cap harder with a flat plate to get it started, then using the PVC tool as described in the service manual, has worked for others. We hope this helps and please let us know if you have any further questions or concerns.
