An attempt to pay back for all the help.

Bad440,

Here is the portion of the article that crackedback posted on another thread.

This is from a magazine article a while back.
----------------------------------------
dist. degrees X 2 + initial= total


dist. degrees / slot length
6.............. .340
7............... .355
8............... .375
9............... .390
10.............. .405
11.5 ........... .420
12.............. .435
13.............. .445
14.............. .460
15.............. .475
16.............. .490
17.............. .505
18.............. .520


So you say your slot is 5/16 OK that is 5 X .0625 = .3125 Not on the chart, but should be around 5 degees 10 total at the crank. So either the chart is wrong or your slot is closer to 3/8 in length. That would give you 8 degrees 16 at the crank plus your 20 initial = 36

I am not sure as to the source of the article, so I can not verify how accurate the chart is. But there is a faily large variance when comparing what you have as it relates to the chart.

When I manually move the unit with the springs detached it does appear that it is moving about 15 degrees. Now I know it is hard to identify this by sight of course. What I may do is create a simple jig with a degree dial. Then I can compare my findings to the chart.

I will take pictures of everything and post here.

Should prove interesting.