Car5858, thanks for the offer! I'm using some photos of drawings that .steve posted on another crane build, for now that is getting me by.
Tom,
This picture is for you, I had to adjust it after I put the bushing in the cap, but it makes it easier to see and should last at least thru the remainder of the pads I have to drill.
Here is a side view of a drilled track pad.
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Jim