And...in between...you can check dwell with simple manual setups depression style, not as good as a strobe but a good check on your parts. Some current crap repro points apparently have pivots poorly located...this means that if you set gap correctly, dwell will be out to lunch, and vice-versa. With good parts the settings should correlate pretty well...if they do not, get parts from a different source.
Using pieces of cardboard to block off the points not under scrutiny, check dwell on each set, then check dwell on the pair against the specs. If proper individual dwell does not produce correct total dwell, then again something is made wrong or bent.