The first arrived from Fisheries in Seattle and it matched the existing tracks exactly. The second arrived from Schaeffer a month later and we noticed the hole spacing was different from the other tracks - after twelve feet the holes were off by 3/8", definitely a problem for a track that penetrates teak deck, fiberglass, and headliner in the main saloon. I called Schaeffer and was told they did not guarantee their 4"-hole center track really was exactly four inch centers from hole to hole. They said it was a problem with their supplier that they could not fix. They had no solution for someone replacing one of their tracks and needing exact hole spacing. The picture below shows how far off the holes were after twelve feet!
I made a trip to San Francisco in Aug 2005 and visited Svendsens in Alameda because they had 11 pieces of 1-1/4 Schaeffer T-track in stock. None of them were 4" center holes, varying from 5/16" under to 3/8" over after 12'. We ended up epoxying the old track and reinstalling it until we could find a replacement. With the boat in the bay area this August (2006) I again visited Svendsens and found they had 5 pieces in stock. The last one we measured was a good fit for the remaining jib track. We installed the new track in Santa Barbara.
I find it amazing that a major manufacturer of sailboat hardware cannot produce T-track of sufficient quality to maintain consistent hole spacing. Knowing this, why would anyone install Schaeffer track on deck or mast knowing that entirely different holes will have to be drilled and/or tapped if a replacement is necessary? We looked at 17 pieces of Schaeffer T-track before we found a second one that matched the starboard jib track. If Schaeffer can't manufacture T-track any better than this then I think I'll avoid all Schaeffer products.
We replaced the teak trim pieces on the staysail tracks also.