The link is the type of tester I used.
http://www.saferacer.com/longacre-leak-down-tester.html?productid=1958&gclid=CLeIv--T_KcCFQbe4AodiRHyqw

-I connected the tester to the injector holes for the first test (when rebuilt injectors). For other tests I used the glow plug holes.

-I installed the springs myself, not the machine shop. I didn't check them in a spring rater but they all were the same height and took a lot of pressure to get the nut started on the valve. I hope this is acceptable

-I need to rephrase build-up. I think the leakage problem is making the build-up happen. I hope that is clearer.

- Leak test was done at TDC of each cylinder and did not have to lock the crank. I made a homemade "timing tape" to determined TDC for each cylinder and marked the balancer. I can post the procedure I used to mark the balancer if needed.

Thanks again!