I am not sure if anyone else has experienced this, but the last 3 Dana 18 rebuild kits I have ordered from Novak included intermediate gear thrust washers that are out of spec. All three kits have been for the 1 1/4" intermediate shaft, so this issue may be limited to the 1 1/4" version. Long story short, the thrust washers are too thick and will bind-up the intermediate gear (if you can even get them in there). The replacements mic out at .097", but according to Novak, the spec is .092-.094". Novak also stated that they were aware of this from the manufacturer and they are now milling them down to proper spec before sending them out. To their credit, they were very knowledgeable and promptly offered to ship 6 of the properly machined thrust washers right away. If you order a new kit from Novak, they likely will have the issue addressed. If you have an older kit from them or order them elsewhere online, you may want to check. I can verify across 6 thrust washers and 3 different t-cases, .097" is no bueno.