You should be able to see the hole and marks from above.That'll make adjustment alot easier.
Make sure your octane setting is at "0", then loosen that nut/screw you just tightened to adjust you're timing.
You may want to advance it a hair or 2 above the pointer and then road test to make sure it doesn't ping on exceleration. If it does retard it a hair & test again.
btw, nice truck.
