Does anyone happen to know the spec on the bolt for the reservoir? While putting fluid in mine, I dropped the bolt as I was trying to put it back and I can't find it. It's still in the fender or somewhere but I've tried everything, even scoped and still can't locate it. I have taped up the reservoir to seal it but have not been able to find any information regarding the specs on the bolt.

This is for my 2005 Crossfire Convertible limited.

Thanks in advance for your help!