Setting Up The Dizzy

[wxman1]

I'm installing a new Accel distributor in my 69 C10 P/U. Probably should have marked the position of the rotor before pulling it out...but I didn't. So I set the #1 cylinder at TDC using my whistler gadget. I insert the dizzy with the rotor roughly pointing at the #1 cylinder post.

I've attached a diagram to illustrate what I'm talking about. Initial attemp = no start.
I rotate the dizzy in the direction indicated in the diagram. I do this twice and it fires up.
I get the timing light out and check timing. Its firing right at TDC. Well...according to the sticker on the fender...it needs 4-6 degrees BTDC. Well the problem is...the vacuum can
is up against the intake manifold...so I can't turn the dizzy any more.

In order to correct this situation I assume I have to pull the distributor out to disengage the distributor shaft and rotate the shaft in the opposite direction in order the get more adjustment in the BTDC direction. If you have any experience at doing this let me know
if this is correct.

Jim