Carb job, LU oil {check for clouds}, impeller,pull the prop for mono fouling on the seals. Pop it in R b4 dropping the LU. Spin the prop clockwise while doing this. Grease the main shaft, change out the grommets and grease them well.
Check shift shaft clearance.
Confirm #1 piston TDC and timing marker. Check idle rpm w/ meter. Check idle timing and lync n sync. Butterflys all smiling. What are your comp #`s? Let the seals seep for a while before you fire it up again. Time is a friend here.
Cheers,
GFS