Originally Posted by
oldtimeyirv
What do you mean by "right offset"? I assumed the spacers were some crazy way to raise the bars.
Fork offset is the distance between the steer tube centerline (the steering axis) and the dropouts for the axle. If the fork were perfectly straight, then there'd be no offset. But the fork blades not straight...they can be curved (like yours) or angled forward, which moves the axle forward of the steering axis a little bit. This is offset. Yours probably has about 40mm of offset.
Fork offset, along with the tire diameter and head tube angle, influences the bike's "trail" number, which is the distance between where the steering axis intersects the ground and where the front tire's contact patch is. Generally, the LESS offset a fork has, the MORE trail a bike will have (because the tire's contact patch will be further behind where the steering axis intersects the ground). The MORE offset a fork has, the LESS trail a bike will have (because the tire's contact patch will be closer to the steering axis). Trail is one of the most influential factors behind how a bike "feels" to ride.
It's a fairly complex topic.
Wikipedia has a brief write-up on it, but there are hundreds of pages on the internet dedicated to this concept. It's pretty interesting to study and ponder.