Picture would help, but My builder says there is no way to tighten thesemeans he or she,, hasn't read the instructions, or is not familiar with the fixing, or is unable to recognise the wrong fixings have been supplied or more.
And cannot be bothered to sort it out.
Reply to Iflo Gelene close coupled pan bolts in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net