88 to 89 convertion

[Chambers]

In my experience it's a machinist term for a screw up while drilling a hole, lol. The drill bit goes in at a incorrect angle or walks and when its finished it doesn't leave a strait perfect hole. It looks as if it was more of a oval then a circle.

So you will just have to drill out some of the holes to get the studs through.

Hope this helps, good luck.