Mathew Sinclair was leg-before to Pollock for a brisk 21 but Richardson and Styris took the score on to 107 before the opener, on 37, miscued
a pull off Nicky Boje to Graeme Smith at midwicket.
Graham Lloyd was brilliantly caught by Adam Hollioake close in before Neil Fairbrother miscued
Salisbury to short-leg.
Orient doubled their lead when the Hull defence got in a tangle from a corner and Ibehre deftly turned before sending a stunning shot into the net from a miscued
Neil Shipperley, with a low drive, then forced Coyne into a save but then miscued
Barry agonised when Tom Ramasut miscued
from 12 yards, with a home defender clearing, and then Bangor's Paul Roberts sent a stoppage-time special barely afoot off target.
Instead of belting it to safety high in the main stand, Nash miscued
He was denied a second by a superb Roy Carroll save and Habib Sissoko missed the chance to snatch a winner when he miscued
from six yards.