Hi Michael,

are you sure you're not already running in 3rd?

Sometimes the problem is that the truck engages the 3rd gear before the second and then is not able anymore to engage the second.

Try this, screw in all the way the two screws of the 3rd clutch.

Do the same with the second gear.

Run the truck, you're in 1st!

Now unscrew the 2nd clutch 3 1/2 turns or until it shifts at a speed you like.

once you're happy with that start to unscrew the 3rd gear (7 1/2) till when you're happy with that.

Take care not to shif into 3rd before it shifts in second!!

I hope it'll work out, have fun.

Ciao