In doing a shim and bucket valve adjustment there is math involved. Unless you want to spend all day trying out different shims to get it right. Find your clearance specs for intake and exhaust. Now ill try to explain this in words without showing you the best of my ability. Since shims are sold in increments of .05 you need to take the clearance you measured and either add or subtract to it .05 to get your clearance within the spec range. (side note: intake should be on tight side of clearance exhaust on loose side because exhaust heats up faster and will expand more). Once you do that if you added to your clearance then that means you have to subtract that much from your shim number you are replaceing, and vice versa. Tada! Your resulting number you get from either adding or subtracting to your shim will be the new shim you need to get. say your shim says 195, that means it is 1.95mm shim. Odd shim numbers like 197 or 192 are more complex to do and I dont want to screw up trying to explain that to you via comment.