[KTL]

Great to hear you discovered the problem Rick. No worries about the gasket. They're so thin and fragile it's a wonder we get them in place the first time w/out harming them. I just use a very thin application of Curil T or Hylomar blue (guys who work on Hewland gearboxes seem to really like this) sealant in place of the gaskets anymore.

Sorry for my misstatement (thanks as always to Jon B for his corrections on me) about the function of the detents. My belief was based on how you can indeed select two gears at once. With the tail case off the transmission, you can put the transmission in 5th and then push one of the other two shift rods forward. I believe it's 1-2. Then you have the trans in two gears at once and the gear shafts are locked. Incidentally this is sort of a half-a$$ed way of locking together the mainshaft and pinion shaft which allows you to loosen or tighten the pinion nut inside the 5th-reverse guide hub.