Glass bedding is always the answer as you know. Pillars are great for keeping the torque from compressing the stock, but it's the glass bedding the accounts for the accuracy and allows for removal of the barrel action and then reinstalling it without loosing your poi.
Next up is going to be drilling out the plastic pillars ( why did they use plastic), installing aluminum pillars, (I've used brass pillars at times), then glass bedding the action. Then I'll tackle the mud. smile