Making a Float Chamber Gasket

[ipmaham]

I was wondering if anyone has ever made a float chamber gasket. Talked to quite a few local Yamaha dealers/shops around me and they all quoted me about 1-2 weeks to get the part in.

Would using a cut out of a sheet of silicone/high heat rubber be sufficient? I was thinking about just tracing the old gasket and cutting a mold out. Cheaper and would only 5 minutes.

Or any other ideas out there? Opinions?