Quote: I want to buy a tester as well. have 2 blocks to check. I read if you modify the probe/transducer it will read inaccurately. so whats the solution with this issue?
Not sure what causes the problem some people have after modifying the probe. ZIPPY told me he'd done the same thing I did and it worked fine (he actually bought his before I bought mine) when he cross-checked it against a more expensive tester from where he worked at the time.
I followed AndyF's advice to calibrate the tester against the distance between the top of two adjacent cylinder bores and that's been a consistent way for me to double-check the readings.
So, I don't know if the issues other people have had has to do w/ their technique for profiling the probe's face (gaps in the curved surface?), leaving too rough of a surface to get accurate readings, not using a proper medium (gel) between the bore surface and the probe, or what.
