Curious, how do YOU check valve guides with the "wiggle" test?
I use a Full Ball small hole gauge set and a micrometer and measure the guides (top, middle and bottom) and mic the length of the valves as well. Repeat a few times to verify. The tools can be had for not too much money, new or used, and the process works pretty good and is accurate enough once you get the feel of things. Half & Full Ball Small Hole Gage Sets | 419249 | Travers Tool Co., Inc.
