I installed my exhaust manifold after cleanup of carbon deposits. When I put it back I having a gap in one of the exhaust round to head. It doesnot go flush. Checked all the bolts are tight. I thought of buying but I cannot find anywhere.

Does that gap create backfire through carburetor. I tried to start engine and started getting backfires to carburetor.

Any information on this is appreciated

Rgds.,
Ganesh

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