I need a 1" threaded steerer for my Manitou 1 - 135mm or longer. I have an 1 1/8" ahead steerer 169mm (steerer is rusty) and an 1 1/8 threaded steerer 155mm. they are slightly different in shape, I believe the threaded is originally from the Manitou 1 and the threadless is from a Manitou 2 or 3...