Here is how I set my mesh. First slip a strip of doubled over 20lb paper between the CB and spur. I tighten down my engine mount screws, and then back them out about a quarter turn each. Then I take a steel punch and with the flat end braced against the base of the engine mount, lightly tap with a hammer until my CB and spur line up and there is no space between the CB and spur, just the paper is sandwiched between them. Then I go back and tighten down the engine mount screws. Remove paper by turning spur. Make sure that when you tap the engine mount screws you only hit at the areas on the outer edges and not the middle section.