Rebuilt top end of engine now carb idles much higher?Please help

I had the heads off the engine and when I replaced the timing gears and chain I made sure the timing gears were lined up. The thing is if I remember correctly at #1 TDC the dots on the timing gears were top gear 12 o’clock bottom gear 12 o’clock. So they were in line but not dot to dot. Maybe when I initially pulled the distributor off #6 was at TDC and the dots maybe were right next to each other. That’s when I marked the distributor? When I put the cover back on it lined up at the zero mark when the piston in cylinder one looked to be TDC. Is it possible I dropped the distributor in 180deg out because it was Initially pulled out with #6 TDC? Yes I attached the timing probe to #1 cylinder. I trying to understand what could of happened.