I recently had the prop off my RV-9A IO-320 for my condition inspection and I decided to check to see what Sensenich had to say about it. They have an instruction published that says to set #1 to TDC on the compression stroke and put #1 blade at 11 oclock. I did that and now it seems I have a vibration around 2200 rpm that I did not have before. There are no balance weights on the hub or spinner. Has anyone any words of wisdom on this? Any idea why Sensenich advises this clocking?
Ed
Ed