Picked up a slant for the first time

intake .010 exhaust .020 factory spec.
Those are the factory numbers hot.
I carefully did my #1 cylinder intake and exhaust hot at .010 and .020.
Then let it sit until stone cold. (Next evening after work)
Rechecked and they were .012 and .022.
Adjusted 2 through 6 cold at .012 and .022.

I would check to see that the heat riser is free and working.
Because it's new to you, I'd establish a baseline with a compression check.
Try bumping the timing to about 10* BTDC.
170 with an automatic...just don't expect too much and you'll be fine.

Pishta pipe and turbo if you want to go wild.