Can anyone tell me how to get the feeler guage down in the exhaust side of a 400ex? its a funny angle and it says .012 stock clearence. I cant get it down in there without bending the guage. I dont mind bending the guage but it still goes in at an angle. is there a better set of guages? the one in the manual looks like it has a bend in it and comes to a point at the end. anyone familiar with this?