Thanks, Bob. I usually see about 20-30 degrees more on the rear, too. This is the first time I've seen it go up like that. I don't know why it even registered high, but it definitely didn't come down like I expected. Do they need to be put in with a special torgue, or thread sealant, or anything like that? (Haven't even looked in the book yet.)
The "clearance" I'm talking about was physical clearance. I didn't wan't to have to file IFR. I went up to 17.5 at one point to avoid the tops. I steered around the buildups, but the ceiling around even those was quite high. I could have contacted ATC and gotten a clearance and gone higher, but 17.5 enabled me to get by OK.
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