I've been removing the built in wardrobe in a room and the rail passed through two timbers either side for support. Thing is, i can't seem to really find a matching bit to redrill them when i put it back up. I'd like to use the same tube since it's strong but as near as i can make out the o/s diameter is just over 27mm and none of the flat/forstner or auger bits i've looked at seem to have a size for that. Is it a case of it being an old imperial size that's not now made or what?Otherwise, if i drill the hole large, what can i pack the ends of the tube with without spoiling the look.. as i would be fitting it to varnished timbers..?