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I typically don't worry about using a torque wrench on every bolt. If the top guide is secured to the cylinder head through plastic holes, then I'd use the 8.7 ft-lb as the vertical guide smaller bolts. My approach is to ensure the bolt is tight enough to not break or warp the part you are bolting. Through plastic I tighten by hand until snug, then 1/8 to 1/4 a turn at most extra. If I'm concerned about a bolt loosening due to vibration I'll use the weakest locktite on threads as extra insurance.