Originally Posted by JDBoston
Now I don't feel as dumb. I think the wording on that step should be changed...
For reference its 8-4, step 2:
Clamp the spar cap in place. Match-Drill #30 the 1/8 [3.2 mm] holes of the spar web into the entire length of the spar cap.
I missed the "web" and instead drilled the flange as you did. Horizontal stab is done now and it is smooth sailing after that mistake.
The spar flange has 3/32nd holes so the wording is correct.
Something that might help new builders is to keep in mind that the majority of the time when possible, the prepunched holes are punched close to final size, so if you are about to enlarge a hole much beyond what is is already punched, take one more look at the instructions and make sure you understand.
Also review the difference between the definition of match drill and final drill in Section 5
Match drill means using an existing hole as a guide or pilot hole to make a hole of the same size (or very close to it) in another part.
Final drill means enlarging a hole from what it is now, to its larger/finial diam.
In a nut shell.... if you see "match drill", you should not be using a drill bit that is much larger than what the punched hole is.