Inokis said:
According to the arreat summit, no items with plus skills affect synergies. A 3 Traps will up the skills in the tree but shouldn't affect the synergies.
I think you misread my point, since that's what I just said:
+3 trap claws (increases the damage skill and it's synergies)
[+3 traps increase each level of each trap skill, so the damage skill rises with the level, and the synergies skills rise with the level, the increase in synergy points doesn't further increase the damage skill though]
wouldn't increase the sentry damage more than
+3 lightning sentry claws (increases the damage skill only)